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1. Geographic Disparities in Domestic Pig Population Exposure to Ebola Viruses, Guinea, 2017–2019

Author

Solène Grayo, Alimou Camara, Bakary Doukouré, Isabelle Ellis, Cécile Troupin, Kerstin Fischer, Jessica Vanhomwegen, Michael White, Martin H. Groschup, Sandra Diederich, and Noël Tordo

Subjects
viruses, serology, Ebola virus, swine, pigs, Guinea, Medicine, Infectious and parasitic diseases, RC109-216
Abstract

Although pigs are naturally susceptible to Reston virus and experimentally to Ebola virus (EBOV), their role in Orthoebolavirus ecology remains unknown. We tested 888 serum samples collected from pigs in Guinea during 2017–2019 (between the 2013–16 epidemic and its resurgence in 2021) by indirect ELISA against the EBOV nucleoprotein. We identified 2 hotspots of possible pig exposure by IgG titer levels: the northern coast had 48.7% of positive serum samples (37/76), and Forest Guinea, bordering Sierra Leone and Liberia, where the virus emerged and reemerged, had 50% of positive serum samples (98/196). The multitarget Luminex approach confirms ELISA results against Ebola nucleoprotein and highlights cross-reactivities to glycoprotein of EBOV, Reston virus, and Bundibugyo virus. Those results are consistent with previous observations of the circulation of Orthoebolavirus species in pig farming regions in Sierra Leone and Ghana, suggesting potential risk for Ebola virus disease in humans, especially in Forest Guinea.

Published
2024
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2. Snapshot of Anti-SARS-CoV-2 IgG Antibodies in COVID-19 Recovered Patients in Guinea

Author

Solène Grayo, Houlou Sagno, Oumar Diassy, Jean-Baptiste Zogbelemou, Sia Jeanne Kondabo, Marilyn Houndekon, Koussay Dellagi, Inès Vigan-Womas, Samia Rourou, Wafa Ben Hamouda, Chaouki Benabdessalem, Melika Ben Ahmed, and Noël Tordo

Subjects
Guinea, COVID-19, SARS-CoV-2, ELISA, IgG antibodies, spike1 Receptor Binding Domain, Medicine
Abstract

Background: Because the regular vaccine campaign started in Guinea one year after the COVID-19 index case, the profile of naturally acquired immunity following primary SARS-CoV-2 infection needs to be deepened. Methods: Blood samples were collected once from 200 patients (90% of African extraction) who were recovered from COVID-19 for at least ~2.4 months (72 days), and their sera were tested for IgG antibodies to SARS-CoV-2 using an in-house ELISA assay against the Receptor Binding Domain (RBD) of the SARS-CoV-2 spike1 protein (RBD/S1-IH kit). Results: Results revealed that 73% of sera (146/200) were positive for IgG to SARS-CoV-2 with an Optical Density (OD) ranging from 0.13 to 1.19 and a median value of 0.56 (IC95: 0.51–0.61). The median OD value at 3 months (1.040) suddenly decreased thereafter and remained stable around OD 0.5 until 15 months post-infection. The OD median value was slightly higher in males compared to females (0.62 vs. 0.49), but the difference was not statistically significant (p-value: 0.073). In contrast, the OD median value was significantly higher among the 60–100 age group (0.87) compared to other groups, with a noteworthy odds ratio compared to the 0–20 age group (OR: 9.69, p-value: 0.044*). Results from the RBD/S1-IH ELISA kit demonstrated superior concordance with the whole spike1 protein ELISA commercial kit compared to a nucleoprotein ELISA commercial kit. Furthermore, anti-spike1 protein ELISAs (whole spike1 and RBD/S1) revealed higher seropositivity rates. Conclusions: These findings underscore the necessity for additional insights into naturally acquired immunity against COVID-19 and emphasize the relevance of specific ELISA kits for accurate seropositivity rates

Published
2024
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3. SARS-CoV-2 Circulation, Guinea, March 2020–July 2021

Author

Solène Grayo, Cécile Troupin, Moussa Moïse Diagne, Houlou Sagno, Isabelle Ellis, Bakary Doukouré, Amadou Diallo, Jean-Mathieu Bart, Mohamed Lamine Kaba, Benoit Henry, Billy Sivahera Muyisa, Mamadou Saliou Sow, Ndongo Dia, Ousmane Faye, Sakoba Keita, and Noël Tordo

Subjects
COVID-19, complete genome sequencing, variants, coronavirus disease, SARS-CoV-2, severe acute respiratory syndrome coronavirus 2, Medicine, Infectious and parasitic diseases, RC109-216
Abstract

This overview of severe acute respiratory syndrome coronavirus 2 circulation over 1.5 years in Guinea demonstrates that virus clades and variants of interest and concern were progressively introduced, mostly by travellers through Conakry, before spreading through the country. Sequencing is key to following virus evolution and establishing efficient control strategies.

Published
2022
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4. Seroprevalence of brucellosis, Q fever and Rift Valley fever in domestic ruminants in Guinea in 2017–2019

Author

Cécile Troupin, Isabelle Ellis, Bakary Doukouré, Alimou Camara, Moustapha Keita, Moise Kagbadouno, Jean-Mathieu Bart, Ramadan Diallo, Sandra Lacôte, Philippe Marianneau, Martin H Groschup, and Noël Tordo

Subjects
Brucellosis, Q fever, Rift Valley fever, Serology, Domestic ruminants, Guinea, Veterinary medicine, SF600-1100
Abstract

Abstract Background Brucellosis, Q fever and Rift Valley fever are considered as Neglected Zoonotic Diseases (NZDs) leading to socioeconomic losses in livestock globally, and particularly in developing countries of Africa where they are under-reported. In this study, we evaluated the seroprevalence of these 3 zoonotic diseases in domestic ruminants in Guinea from 2017 to 2019. A total of 1357 sera, sampled from 463 cattle, 408 goats and 486 sheep, were collected in 17 Guinean prefectures and analyzed by enzyme-linked immunosorbent assay (ELISA). Results Cattle was the species with highest seroprevalence (5 to 20-fold higher than in small ruminants) for the three diseases. The seroprevalence of brucellosis, mostly focused in Western Guinea, was 11.0% (51 of 463) in cattle, 0.4% (2 in 486) in sheep while no specific antibodies were found in goats. Q fever, widespread across the country, was the most frequently detected zoonosis with a mean seroprevalence of 20.5% (95 in 463), 4.4% (18 in 408) and 2.3% (11 in 486) in cattle, goats and sheep, respectively. The mean seroprevalence of RVF was 16.4% (76 in 463) in cattle, 1.0% (4 in 408) in goats and 1.0% (5 in 486) in sheep. Among the samples 19.3% were seropositive for at least one of the three NZDs, 2.5% showed specific antibodies against at least two pathogens and 4 cattle (0.8%) were seropositive for all three pathogens. In cattle, adults over 3-years old and females presented a higher antibody seroprevalence for the three diseases, in congruence with putative exposure risk. Conclusions This study confirms the circulation of these three zoonotic pathogens in Guinea and highlights the need for implementing a syndromic surveillance of ruminant abortions by the Guinean veterinary authorities as well as for the screening of the human population at risk (veterinarians, breeders, slaughterers) in a One Health perspective.

Published
2022
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5. Diverse susceptibilities and responses of human and rodent cells to orthohantavirus infection reveal different levels of cellular restriction.

Author

Giulia Gallo, Petr Kotlik, Philippe Roingeard, Marc Monot, Guillaume Chevreux, Rainer G Ulrich, Noël Tordo, and Myriam Ermonval

Subjects
Arctic medicine. Tropical medicine, RC955-962, Public aspects of medicine, RA1-1270
Abstract

Orthohantaviruses are rodent-borne emerging viruses that may cause severe diseases in humans but no apparent pathology in their small mammal reservoirs. However, the mechanisms leading to tolerance or pathogenicity in humans and persistence in rodent reservoirs are poorly understood, as is the manner in which they spread within and between organisms. Here, we used a range of cellular and molecular approaches to investigate the interactions of three different orthohantaviruses-Puumala virus (PUUV), responsible for a mild to moderate form of hemorrhagic fever with renal syndrome in humans, Tula virus (TULV) with low pathogenicity, and non-pathogenic Prospect Hill virus (PHV)-with human and rodent host cell lines. Besides the fact that cell susceptibility to virus infection was shown to depend on the cell type and virus strain, the three orthohantaviruses were able to infect Vero E6 and HuH7 human cells, but only the former secreted infectious particles. In cells derived from PUUV reservoir, the bank vole (Myodes glareolus), PUUV achieved a complete viral cycle, while TULV did not enter the cells and PHV infected them but did not produce infectious particles, reflecting differences in host specificity. A search for mature virions by electron microscopy (EM) revealed that TULV assembly occurred in part at the plasma membrane, whereas PHV particles were trapped in autophagic vacuoles in cells of the heterologous rodent host. We described differential interactions of orthohantaviruses with cellular factors, as supported by the cellular distribution of viral nucleocapsid protein with cell compartments, and proteomics identification of cellular partners. Our results also showed that interferon (IFN) dependent gene expression was regulated in a cell and virus species dependent manner. Overall, our study highlighted the complexity of the host-virus relationship and demonstrated that orthohantaviruses are restricted at different levels of the viral cycle. In addition, the study opens new avenues to further investigate how these viruses differ in their interactions with cells to evade innate immunity and how it depends on tissue type and host species.

Published
2022
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6. A One Medicine Mission for an Effective Rabies Therapy

Author

Darryn L. Knobel, Alan C. Jackson, John Bingham, Hildegund C. J. Ertl, Andrew D. Gibson, Daniela Hughes, Kenneth Joubert, Reeta S. Mani, Bert J. Mohr, Susan M. Moore, Hugh Rivett-Carnac, Noël Tordo, James W. Yeates, Anthony B. Zambelli, and Charles E. Rupprecht

Subjects
rabies, treatment, pathogenesis, prognosis, canine, neurodegeneration, Veterinary medicine, SF600-1100
Abstract

Despite the disease's long history, little progress has been made toward a treatment for rabies. The prognosis for patient recovery remains dire. For any prospect of survival, patients require aggressive critical care, which physicians in rabies endemic areas may be reluctant or unable to provide given the cost, clinical expertise required, and uncertain outcome. Systematic clinical research into combination therapies is further hampered by sporadic occurrence of cases. In this Perspective, we examine the case for a One Medicine approach to accelerate development of an effective therapy for rabies through the veterinary care and investigational treatment of naturally infected dogs in appropriate circumstances. We review the pathogenesis of rabies virus in humans and dogs, including recent advances in our understanding of the molecular basis for the severe neurological dysfunction. We propose that four categories of disease process need to be managed in patients: viral propagation, neuronal degeneration, inflammation and systemic compromise. Compassionate critical care and investigational treatment of naturally infected dogs receiving supportive therapy that mimics the human clinical scenario could increase opportunities to study combination therapies that address these processes, and to identify biomarkers for prognosis and therapeutic response. We discuss the safety and ethics of this approach, and introduce the Canine Rabies Treatment Initiative, a non-profit organization with the mission to apply a One Medicine approach to the investigation of diagnostic, prognostic, and therapeutic options for rabies in naturally infected dogs, to accelerate transformation of rabies into a treatable disease for all patients.

Published
2022
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7. Renewed Public Health Threat from Emerging Lyssaviruses

Author

Anthony R. Fooks, Rebecca Shipley, Wanda Markotter, Noël Tordo, Conrad M. Freuling, Thomas Müller, Lorraine M. McElhinney, Ashley C. Banyard, and Charles E. Rupprecht

Subjects
rabies, lyssavirus, bats, emerging, novel, encephalitis, Microbiology, QR1-502
Abstract

Pathogen discovery contributes to our knowledge of bat-borne viruses and is linked to the heightened interest globally in bats as recognised reservoirs of zoonotic agents. The transmission of lyssaviruses from bats-to-humans, domestic animals, or other wildlife species is uncommon, but interest in these pathogens remains due to their ability to cause an acute, progressive, invariably fatal encephalitis in humans. Consequently, the detection and characterisation of bat lyssaviruses continues to expand our knowledge of their phylogroup definition, viral diversity, host species association, geographical distribution, evolution, mechanisms for perpetuation, and the potential routes of transmission. Although the opportunity for lyssavirus cross-species transmission seems rare, adaptation in a new host and the possibility of onward transmission to humans requires continued investigation. Considering the limited efficacy of available rabies biologicals it is important to further our understanding of protective immunity to minimize the threat from these pathogens to public health. Hence, in addition to increased surveillance, the development of a niche pan-lyssavirus vaccine or therapeutic biologics for post-exposure prophylaxis for use against genetically divergent lyssaviruses should be an international priority as these emerging lyssaviruses remain a concern for global public health.

Published
2021
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8. Puumala Virus Variants Circulating in Forests of Ardennes, France: Ten Years of Genetic Evolution

Author

Guillaume Castel, Elodie Monchatre-Leroy, Marc López-Roig, Séverine Murri, Mathilde Couteaudier, Franck Boué, Denis Augot, Frank Sauvage, Dominique Pontier, Viviane Hénaux, Philippe Marianneau, Jordi Serra-Cobo, and Noël Tordo

Subjects
Orthohantavirus, Myodes glareolus, seroprevalence, microdiversity, evolution, population dynamics, Medicine
Abstract

In Europe, Puumala virus (PUUV) transmitted by the bank vole (Myodes glareolus) is the causative agent of nephropathia epidemica (NE), a mild form of haemorrhagic fever with renal syndrome. In France, very little is known about the spatial and temporal variability of the virus circulating within bank vole populations. The present study involved monitoring of bank vole population dynamics and PUUV microdiversity over a ten-year period (2000–2009) in two forests of the Ardennes region: Elan and Croix-Scaille. Ardennes region is characterised by different environmental conditions associated with different NE epidemiology. Bank vole density and population parameters were estimated using the capture/marking/recapture method, and blood samples were collected to monitor the overall seroprevalence of PUUV in rodent populations. Phylogenetic analyses of fifty-five sequences were performed to illustrate the genetic diversity of PUUV variants between forests. The pattern of the two forests differed clearly. In the Elan forest, the rodent survival was higher, and this limited turn-over resulted in a lower seroprevalence and diversity of PUUV sequences than in the Croix-Scaille forest. Uncovering the links between host dynamics and virus microevolution is improving our understanding of PUUV distribution in rodents and the NE risk.

Published
2021
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10. 2022 taxonomic update of phylum Negarnaviricota (Riboviria: Orthornavirae), including the large orders Bunyavirales and Mononegavirales

Author

Jens H. Kuhn, Scott Adkins, Sergey V. Alkhovsky, Tatjana Avšič-Županc, María A. Ayllón, Justin Bahl, Anne Balkema-Buschmann, Matthew J. Ballinger, Martina Bandte, Martin Beer, Nicolas Bejerman, Éric Bergeron, Nadine Biedenkopf, Laurent Bigarré, Carol D. Blair, Kim R. Blasdell, Steven B. Bradfute, Thomas Briese, Paul A. Brown, Rémy Bruggmann, Ursula J. Buchholz, Michael J. Buchmeier, Alexander Bukreyev, Felicity Burt, Carmen Büttner, Charles H. Calisher, Thierry Candresse, Jeremy Carson, Inmaculada Casas, Kartik Chandran, Rémi N. Charrel, Yuya Chiaki, Anya Crane, Mark Crane, Laurent Dacheux, Elena Dal Bó, Juan Carlos de la Torre, Xavier de Lamballerie, William M. de Souza, Rik L. de Swart, Nolwenn M. Dheilly, Nicholas Di Paola, Francesco Di Serio, Ralf G. Dietzgen, Michele Digiaro, J. Felix Drexler, W. Paul Duprex, Ralf Dürrwald, Andrew J. Easton, Toufic Elbeaino, Koray Ergünay, Guozhong Feng, Claudette Feuvrier, Andrew E. Firth, Anthony R. Fooks, Pierre B. H. Formenty, Juliana Freitas-Astúa, Selma Gago-Zachert, María Laura García, Adolfo García-Sastre, Aura R. Garrison, Scott E. Godwin, Jean-Paul J. Gonzalez, Joëlle Goüy de Bellocq, Anthony Griffiths, Martin H. Groschup, Stephan Günther, John Hammond, Jussi Hepojoki, Melanie M. Hierweger, Seiji Hongō, Masayuki Horie, Hidenori Horikawa, Holly R. Hughes, Adam J. Hume, Timothy H. Hyndman, Dàohóng Jiāng, Gilda B. Jonson, Sandra Junglen, Fujio Kadono, David G. Karlin, Boris Klempa, Jonas Klingström, Michel C. Koch, Hideki Kondō, Eugene V. Koonin, Jarmila Krásová, Mart Krupovic, Kenji Kubota, Ivan V. Kuzmin, Lies Laenen, Amy J. Lambert, Jiànróng Lǐ, Jun-Min Li, François Lieffrig, Igor S. Lukashevich, Dongsheng Luo, Piet Maes, Marco Marklewitz, Sergio H. Marshall, Shin-Yi L. Marzano, John W. McCauley, Ali Mirazimi, Peter G. Mohr, Nick J. G. Moody, Yasuaki Morita, Richard N. Morrison, Elke Mühlberger, Rayapati Naidu, Tomohide Natsuaki, José A. Navarro, Yutaro Neriya, Sergey V. Netesov, Gabriele Neumann, Norbert Nowotny, Francisco M. Ochoa-Corona, Gustavo Palacios, Laurane Pallandre, Vicente Pallás, Anna Papa, Sofia Paraskevopoulou, Colin R. Parrish, Alex Pauvolid-Corrêa, Janusz T. Pawęska, Daniel R. Pérez, Florian Pfaff, Richard K. Plemper, Thomas S. Postler, Françoise Pozet, Sheli R. Radoshitzky, Pedro L. Ramos-González, Marius Rehanek, Renato O. Resende, Carina A. Reyes, Víctor Romanowski, Dennis Rubbenstroth, Luisa Rubino, Artemis Rumbou, Jonathan A. Runstadler, Melanie Rupp, Sead Sabanadzovic, Takahide Sasaya, Heike Schmidt-Posthaus, Martin Schwemmle, Torsten Seuberlich, Stephen R. Sharpe, Mang Shi, Manuela Sironi, Sophie Smither, Jin-Won Song, Kirsten M. Spann, Jessica R. Spengler, Mark D. Stenglein, Ayato Takada, Robert B. Tesh, Jana Těšíková, Natalie J. Thornburg, Nicole D. Tischler, Yasuhiro Tomitaka, Keizō Tomonaga, Noël Tordo, Kenta Tsunekawa, Massimo Turina, Ioannis E. Tzanetakis, Anna Maria Vaira, Bernadette van den Hoogen, Bert Vanmechelen, Nikos Vasilakis, Martin Verbeek, Susanne von Bargen, Jiro Wada, Victoria Wahl, Peter J. Walker, Anna E. Whitfield, John V. Williams, Yuri I. Wolf, Junki Yamasaki, Hironobu Yanagisawa, Gongyin Ye, Yong-Zhen Zhang, Arnfinn Lodden Økland, Virology, NIH - National Institute of Allergy and Infectious Diseases (NIAID) (Estados Unidos), Battelle National Biodefense Institute, Mississippi Agricultural and Forestry Experiment Station (MAFES) (Estados Unidos), United States Department of Agriculture. National Institute of Food and Agriculture, Integrated Research Facility at Fort Detrick (IRF-Frederick), National Institute of Allergy and Infectious Diseases [Bethesda] (NIAID-NIH), National Institutes of Health [Bethesda] (NIH)-National Institutes of Health [Bethesda] (NIH), U.S. Horticultural Research Laboratory ( Fort Pierce, USA), United States Department of Agriculture (USDA), N.F. Gamaleya Federal Research Centre N.F. Gamaleya Federal Research Centre of Epidemiology and Microbiology (Gamaleya), University of Ljubljana, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology (INIA), Laboratoire de Ploufragan-Plouzané-Niort [ANSES], Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Biologie du fruit et pathologie (BFP), Université de Bordeaux (UB)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Unité des Virus Emergents (UVE), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Lyssavirus, épidémiologie et neuropathologie - Lyssavirus Epidemiology and Neuropathology, Institut Pasteur [Paris] (IP)-Université Paris Cité (UPCité), Centre National de Référence de la Rage - National Reference Center Rabies (CNR), Virologie UMR1161 (VIRO), École nationale vétérinaire - Alfort (ENVA)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire Départemental d’Analyses du Jura (LDA39), Virologie des archées - Archaeal Virology, Université Paris Cité (UPCité)-Microbiologie Intégrative et Moléculaire (UMR6047), Institut Pasteur [Paris] (IP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris] (IP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur de Guinée, Réseau International des Instituts Pasteur (RIIP), Chinese Center for Disease Control and Prevention, Pharmaq Analytiq, This work was supported in part through Laulima Government Solutions, LLC prime contract with the US National Institute of Allergy and Infectious Diseases (NIAID) under Contract No. HHSN272201800013C. J.H.K. performed this work as an employee of Tunnell Government Services (TGS), a subcontractor of Laulima Government Solutions, LLC under Contract No. HHSN272201800013C. This work was also funded in part by Contract No. HSHQDC-15-C-00064 awarded by DHS S&T for the management and operation of The National Biodefense Analysis and Countermeasures Center, a federally funded research and development center operated by the Battelle National Biodefense Institute (V.W.), and NIH contract HHSN272201000040I/HHSN27200004/D04 and grant R24AI120942 (N.V., R.B.T.). S.S. acknowledges support from the Mississippi Agricultural and Forestry Experiment Station (MAFES), USDA-ARS project 58-6066-9-033 and the National Institute of Food and Agriculture, US Department of Agriculture, Hatch Project, under Accession Number 1021494., Ayllón, María A., Casas, I., Navarro Bohigues, J.A., and Pallas, V.

Subjects
Biointeractions and Plant Health, Virology, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Viruses, Life Science, Humans, 630 Landwirtschaft, General Medicine, Mononegavirales, Phylogeny, Virology & Molecular Biology, Virologie & Moleculaire Biologie
Abstract

50 Pág., In March 2022, following the annual International Committee on Taxonomy of Viruses (ICTV) ratifcation vote on newly proposed taxa, the phylum Negarnaviricota was amended and emended. The phylum was expanded by two new families (bunyaviral Discoviridae and Tulasviridae), 41 new genera, and 98 new species. Three hundred forty-nine species were renamed and/or moved. The accidentally misspelled names of seven species were corrected. This article presents the updated taxonomy of Negarnaviricota as now accepted by the ICTV, This work was supported in part through Laulima Govern ment Solutions, LLC prime contract with the US National Institute of Allergy and Infectious Diseases (NIAID) under Contract No. HHSN272201800013C. J.H.K. performed this work as an employee of Tunnell Government Services (TGS), a subcontractor of Laulima Gov ernment Solutions, LLC under Contract No. HHSN272201800013C. This work was also funded in part by Contract No. HSHQDC 15-C-00064 awarded by DHS S&T for the management and operation of The National Biodefense Analysis and Countermeasures Center, a federally funded research and development center operated by the Battelle National Biodefense Institute (V.W.); and NIH contract HHSN272201000040I/HHSN27200004/D04 and grant R24AI120942 (N.V., R.B.T.). S.S. acknowledges support from the Mississippi Agri cultural and Forestry Experiment Station (MAFES), USDA-ARS pro ject 58-6066-9-033 and the National Institute of Food and Agriculture, US Department of Agriculture, Hatch Project, under Accession Num ber 1021494.

Published
2022

13. [Phage display: a new weapon for antiviral research]

Author

Guillaume, Castel, Bernadette, Heyd, and Noël, Tordo

Abstract

New strategies for antiviral research are urgently requested considering the growing number of emerging viruses as well as the viral variants resistant to existing antiviral molecules used for therapy. Phage-display is a powerful technology to select unique molecules with selective affinity for a specific target from libraries of huge diversity. This promising technology to isolate candidates or to improve their affinity for the target has been explored specifically for antiviral drug discovery. Phage display consists of presenting peptides/proteins at the bacteriophage surface by fusing their gene with that of a capsid protein of the phage. Upon library screening, the sequence of the selected peptide/protein is easily deduced from the DNA of the recombinant phage. Phage display allows for the identification of antiviral candidates, using a strategy which consists of an initial screening for target affinity, followed by confirmation of inhibitory potential on viral replication. After summarising previous uses of phage display in antiviral research, this review proposes optimized strategies for combining the significant screening potential of phage display with complementary rational approaches based on understanding interactions in, and structures of, viral complexes. Such combined strategies would maximise the selection of molecules with strong antiviral potential.

Published
2022

14. ICTV Virus Taxonomy Profile

Author

Peter J, Walker, Juliana, Freitas-Astúa, Nicolas, Bejerman, Kim R, Blasdell, Rachel, Breyta, Ralf G, Dietzgen, Anthony R, Fooks, Hideki, Kondo, Gael, Kurath, Ivan V, Kuzmin, Pedro Luis, Ramos-González, Mang, Shi, David M, Stone, Robert B, Tesh, Noël, Tordo, Nikos, Vasilakis, Anna E, Whitfield, and Ictv Report Consortium

Subjects
Birds, Mammals, Fishes, Virion, Animals, Reptiles, Genome, Viral, Rhabdoviridae, Virus Replication
Abstract

The family

Published
2022

15. Puumala Virus Variants Circulating in Forests of Ardennes, France: Ten Years of Genetic Evolution

Author

Franck Boué, Jordi Serra-Cobo, Séverine Murri, Mathilde Couteaudier, Dominique Pontier, Philippe Marianneau, Noël Tordo, Viviane Hénaux, Guillaume Castel, Denis Augot, Frank Sauvage, Marc López-Roig, Elodie Monchatre-Leroy, Centre de Biologie pour la Gestion des Populations (UMR CBGP), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Laboratoire de la rage et de la faune sauvage de Nancy (LRFSN), Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Institut de Recerca de la Biodiversitat - Biodiversity Research Institute [Barcelona, Spain] (IRBio UB), Universitat de Barcelona (UB), Department de Biologia Evolutiva, Ecologia i Ciències Ambientals, University of Barcelona, Laboratoire de Lyon [ANSES], Université de Lyon-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Morphogénèse et antigénicité du VIH et du virus des Hépatites (MAVIVH - U1259 Inserm - CHRU Tours ), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA), Epidémiosurveillance de protozooses à transmission alimentaire et vectorielle (ESCAPE), Université de Reims Champagne-Ardenne (URCA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Seenovate, Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), LabEx Ecofect, Eco-Evolutionary Dynamics of Infectious Diseases, Stratégies Antivirales, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris] (IP), Institut Pasteur de Guinée, Réseau International des Instituts Pasteur (RIIP), This research was internally funded by the participating teams and received additional funding from ANSES (Afsset grant EST-2007-75) as well as EU grants FP7-261504 EDENext and FP7-278976 ANTIGONE and the LABEX ECOFECT (ANR-11-LABX-0048) of Université de Lyon., ANR-11-LABX-0048,ECOFECT,Dynamiques eco-évolutives des maladies infectieuses(2011), European Project: 261504,EC:FP7:HEALTH,FP7-HEALTH-2010-single-stage,EDENEXT(2011), European Project: 278976,EC:FP7:HEALTH,FP7-HEALTH-2011-two-stage,ANTIGONE(2011), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud])-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Université de Tours-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire de Tours (CHRU TOURS), Laboratoire de santé animale, sites de Maisons-Alfort et de Dozulé, Centre International de Recherche en Infectiologie - UMR (CIRI), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), ANSES (Afsset grant EST-2007-75), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Institut Pasteur [Paris], Marchal-Mauer, Sophie, Dynamiques eco-évolutives des maladies infectieuses - - ECOFECT2011 - ANR-11-LABX-0048 - LABX - VALID, Biology and control of vector-borne infections in Europe - EDENEXT - - EC:FP7:HEALTH2011-01-01 - 2015-06-30 - 261504 - VALID, and ANTIcipating the Global Onset of Novel Epidemics - ANTIGONE - - EC:FP7:HEALTH2011-11-01 - 2016-10-31 - 278976 - VALID

Subjects
Microbiology (medical), Orthohantavirus, Rodent, Population, Zoology, [SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, Article, 03 medical and health sciences, biology.animal, [SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy, Myodes glareolus, evolution, Nephropathia epidemica, medicine, population dynamics, Immunology and Allergy, Seroprevalence, education, Virus Orthohantavirus, Molecular Biology, 030304 developmental biology, [SDV.MP.VIR] Life Sciences [q-bio]/Microbiology and Parasitology/Virology, 0303 health sciences, education.field_of_study, Genetic diversity, General Immunology and Microbiology, biology, seroprevalence, 030306 microbiology, Microevolution, biology.organism_classification, medicine.disease, Bank vole, Infectious Diseases, microdiversity, [SDV.SPEE] Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.MP.VIR]Life Sciences [q-bio]/Microbiology and Parasitology/Virology, Medicine, Puumala virus, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, [SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis
Abstract

International audience; In Europe, Puumala virus (PUUV) transmitted by the bank vole (Myodes glareolus) is the causative agent of nephropathia epidemica (NE), a mild form of haemorrhagic fever with renal syndrome. In France, very little is known about the spatial and temporal variability of the virus circulating within bank vole populations. The present study involved monitoring of bank vole population dynamics and PUUV microdiversity over a ten-year period (2000–2009) in two forests of the Ardennes region: Elan and Croix-Scaille. Ardennes region is characterised by different environmental conditions associated with different NE epidemiology. Bank vole density and population parameters were estimated using the capture/marking/recapture method, and blood samples were collected to monitor the overall seroprevalence of PUUV in rodent populations. Phylogenetic analyses of fifty-five sequences were performed to illustrate the genetic diversity of PUUV variants between forests. The pattern of the two forests differed clearly. In the Elan forest, the rodent survival was higher, and this limited turn-over resulted in a lower seroprevalence and diversity of PUUV sequences than in the Croix-Scaille forest. Uncovering the links between host dynamics and virus microevolution is improving our understanding of PUUV distribution in rodents and the NE risk.

Published
2021

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