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2. Serologic Surveillance for SARS-CoV-2 Infection among Wild Rodents, Europe

Author

Bourret, Vincent, Dutra, Lara, Alburkat, Hussein, Maki, Sanna, Lintunen, Ella, Wasniewski, Marine, Kant, Ravi, Grzybek, Maciej, Venkat, Vinaya, Asad, Hayder, Pradel, Julien, Bouilloud, Marie, Leirs, Herwig, Colombo, Valeria Carolina, Sluydts, Vincent, Stuart, Peter, McManus, Andrew, Eccard, Jana A., Firozpoor, Jasmin, Imholt, Christian, Nowicka, Joanna, Goll, Aleksander, Ranc, Nathan, Castel, Guillaume, Charbonnel, Nathalie, and Sironen, Tarja

Subjects
Wildlife -- Statistics -- Health aspects, Rodent populations -- Statistics -- Health aspects, Zoonoses -- Statistics -- Risk factors, Disease transmission -- Statistics -- Risk factors, Health
Abstract

Reverse transmission of diverse zoonotic pathogens (bacteria, viruses, eukaryotic parasites, fungi) from humans to animals has been recognized and documented as a global concern for years (1). On July 6, [...]

Published
2022

6. Efficacy of topical mosquito repellent (picaridin) plus long-lasting insecticidal nets versus long-lasting insecticidal nets alone for control of malaria: a cluster randomised controlled trial

Author

Sluydts, Vincent, Durnez, Lies, Heng, Somony, Gryseels, Charlotte, Canier, Lydie, Kim, Saorin, Van Roey, Karel, Kerkhof, Karen, Khim, Nimol, Mao, Sokny, Uk, Sambunny, Sovannaroth, Siv, Grietens, Koen Peeters, Sochantha, Tho, Menard, Didier, and Coosemans, Marc

Published
2016
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8. Serological surveillance for wild rodent infection with SARS-CoV-2 in Europe

Author

Bourret, Vincent, primary, Dutra, Lara, additional, Alburkat, Hussein, additional, Mäki, Sanna, additional, Lintunen, Ella, additional, Wasniewski, Marine, additional, Kant, Ravi, additional, Grzybek, Maciej, additional, Venkat, Vinaya, additional, Asad, Hayder, additional, Pradel, Julien, additional, Bouilloud, Marie, additional, Leirs, Herwig, additional, Colombo, Valeria Carolina, additional, Sluydts, Vincent, additional, Stuart, Peter, additional, McManus, Andrew, additional, Eccard, Jana A., additional, Firozpoor, Jasmin, additional, Imholt, Christian, additional, Nowicka, Joanna, additional, Goll, Aleksander, additional, Ranc, Nathan, additional, Castel, Guillaume, additional, Charbonnel, Nathalie, additional, and Sironen, Tarja, additional

Published
2022
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13. SARS‐CoV‐2 surveillance in Norway rats ( Rattus norvegicus ) from Antwerp sewer system, Belgium

Author

Colombo, Valeria Carolina, primary, Sluydts, Vincent, additional, Mariën, Joachim, additional, Vanden Broecke, Bram, additional, Van Houtte, Natalie, additional, Leirs, Wannes, additional, Jacobs, Lotte, additional, Iserbyt, Arne, additional, Hubert, Marine, additional, Heyndrickx, Leo, additional, Goris, Hanne, additional, Delputte, Peter, additional, De Roeck, Naomi, additional, Elst, Joris, additional, Ariën, Kevin K., additional, Leirs, Herwig, additional, and Gryseels, Sophie, additional

Published
2021
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15. First Detection of Bartonella spp. in Small Mammals from Rice Storage and Processing Facilities in Myanmar and Sri Lanka

Author

Boege, Inga, Pfeffer, Martin, Htwe, Nyo M., Maw, Pyai P., Sarathchandra, Siriwardana Rampalage, Sluydts, Vincent, Piscitelli, Anna Pia, Jacob, Jens, and Obiegala, Anna

Subjects
Suncus murinus, Bartonella henselae, Bartonella kosoyi, zoonosis, Rattus spp, Bartonella sp. SE-Bart-D, lcsh:Biology (General), rodents, Bandicoot rats, Mus booduga, Biology, lcsh:QH301-705.5
Abstract

(1) Background: Bartonella spp. are zoonotic bacteria with small mammals as main reservoirs. Bartonella spp. prevalence in small mammals from Myanmar and Sri Lanka are yet unknown. (2) Methods: Small mammals were snap trapped in Sri Lanka and Myanmar in urban surroundings. Spleens-derived DNA was screened for Bartonella spp. using conventional PCR based on three target genes. Positive samples were sequenced. (3) Results: 994 small mammals were collected comprising 6 species: Bandicota bengalensis, Bandicota indica, Rattus exulans, Rattus rattus, Mus booduga, and Suncus murinus. In Myanmar, the Bartonella prevalence in Bandicoot rats (68.47%) was higher than in Rattus rattus (41.67%), Rattus exulans (21.33%), and Suncus murinus (3.64%). Furthermore the prevalence in Myanmar (34%, n = 495) was twice as high as in Sri Lanka (16%, n = 499). In Sri Lanka, Bartonella spp. occurred almost exclusively in R. rattus. In Myanmar, Bartonella kosoyi was mainly detected (56%), followed by Bartonella sp. KM2529 (15%), Bartonella sp. SE-Bart D (12%) and Bartonella henselae (1%). In Sri Lanka, B. phoceensis (60%) and Bartonella sp. KM2581 (33%) were predominant. (4) Conclusions: Bartonella spp. were detected in all investigated small mammal species from Myanmar and Sri Lanka for the first time. Bartonella kosoyi and B. henselae are zoonotic. As these small mammals originated from urban settlements, human bartonellosis seems likely to occur.

Published
2021
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16. SARS‐CoV‐2 surveillance in Norway rats (Rattus norvegicus) from Antwerp sewer system, Belgium.

Author

Colombo, Valeria Carolina, Sluydts, Vincent, Mariën, Joachim, Vanden Broecke, Bram, Van Houtte, Natalie, Leirs, Wannes, Jacobs, Lotte, Iserbyt, Arne, Hubert, Marine, Heyndrickx, Leo, Goris, Hanne, Delputte, Peter, De Roeck, Naomi, Elst, Joris, Ariën, Kevin K., Leirs, Herwig, and Gryseels, Sophie

Subjects
*RATTUS norvegicus, *SARS-CoV-2, *SEWERAGE, *COVID-19 pandemic, *SERODIAGNOSIS
Abstract

SARS‐CoV‐2 human‐to‐animal transmission can lead to the establishment of novel reservoirs and the evolution of new variants with the potential to start new outbreaks in humans. We tested Norway rats inhabiting the sewer system of Antwerp, Belgium, for the presence of SARS‐CoV‐2 following a local COVID‐19 epidemic peak. In addition, we discuss the use and interpretation of SARS‐CoV‐2 serological tests on non‐human samples. Between November and December 2020, Norway rat oral swabs, faeces and tissues from the sewer system of Antwerp were collected to be tested by RT‐qPCR for the presence of SARS‐CoV‐2. Serum samples were screened for the presence of anti‐SARS‐CoV‐2 IgG antibodies using a Luminex microsphere immunoassay (MIA). Samples considered positive were then checked for neutralizing antibodies using a conventional viral neutralization test (cVNT). The serum of 35 rats was tested by MIA showing three potentially positive sera that were later negative by cVNT. All tissue samples of 39 rats analysed tested negative for SARS‐CoV‐2 RNA. This is the first study that evaluates SARS‐CoV‐2 infection in urban rats. We can conclude that the sample of rats analysed had never been infected with SARS‐CoV‐2. However, monitoring activities should continue due to the emergence of new variants prone to infect Muridae rodents. [ABSTRACT FROM AUTHOR]

Published
2022
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18. Citizen science reveals the population exposure to air pollution

Author

Trimpeneers, Elke, De Craemer, Sam, Van den Bossche, Joris, Sluydts, Vincent, Meysman, Filip, Vercauteren, Jordy, Lefebvre, Wouter, Dons, Evi, Fierens, Frans, Huyse, Huib, and Hooyberghs, Hans

Subjects
bepress|Physical Sciences and Mathematics, EarthArXiv|Physical Sciences and Mathematics|Environmental Sciences|Environmental Monitoring, EarthArXiv|Physical Sciences and Mathematics|Environmental Sciences, bepress|Physical Sciences and Mathematics|Environmental Sciences, bepress|Physical Sciences and Mathematics|Environmental Sciences|Environmental Monitoring, EarthArXiv|Physical Sciences and Mathematics
Abstract

Air pollution remains a key environmental problem in an increasingly urbanized world. To quantify health impacts and support informed policies, the population exposure needs to be accurately monitored. However, the inherent spatial variability of air quality poses a tenacious challenge to this. While concentrations of traffic-related pollutants like nitrogen dioxide (NO2) are known to vary over short distances, official monitoring networks remain inherently sparse, as reference stations are costly to construct and operate. Here we show that citizen science provides an cost-effective way to collect large, spatially distributed datasets that critically complement official monitoring.

Published
2020

19. Citizen science reveals the population exposure to air pollution

Author

Meysman, Filip, primary, De Craemer, Sam, additional, Lefebvre, Wouter, additional, Vercauteren, Jordy, additional, Sluydts, Vincent, additional, Dons, Evi, additional, Hooyberghs, Hans, additional, Van den Bossche, Joris, additional, Trimpeneers, Elke, additional, and Fierens, Frans, additional

Published
2020
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20. MOESM1 of Identification and characterization of areas of high and low risk for asymptomatic malaria infections at sub-village level in Ratanakiri, Cambodia

Author

Durnez, Lies, Pareyn, Myrthe, Mean, Vanna, Saorin Kim, Nimol Khim, Menard, Didier, Coosemans, Marc, Sochantha, Tho, and Sluydts, Vincent

Subjects
parasitic diseases
Abstract

Additional file 1: Table S1. Survey questionnaire for collection of malariometric and risk factor data. Table S2. Summary characteristics from the population census of the three villages divided into the sampled and not sampled individuals for plasmodium prevalence identification. Table S3. Single and mixed individual plasmodium infections as detected by PCR for the three village. Pf: Plasmodium falciparum, Pv: Plasmodium vivax, Pm: Plasmodium malariae. PfPv, PfPm, PvPm and PfPvPm stands for the mixed infections occurring in one individual for multiple plasmodium species. Numbers are counts of infected individuals. Table S4. Results of univariate analysis comparing risk factors for infection with Plasmodium spp. (all species combined), P. falciparum, P. vivax and P. malariae. Odds ratio and upper and lower 95% confidence limits were calculated with respect to the reference category, which is the first reported subgroup.

Published
2018
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22. Households or Hotspots? Defining Intervention Targets for Malaria Elimination in Ratanakiri Province, Eastern Cambodia

Author

Bannister-Tyrrell, Melanie, primary, Krit, Meryam, additional, Sluydts, Vincent, additional, Tho, Sochantha, additional, Sokny, Mao, additional, Mean, Vanna, additional, Kim, Saorin, additional, Menard, Didier, additional, Grietens, Koen Peeters, additional, Abrams, Steven, additional, Hens, Niel, additional, Coosemans, Marc, additional, Bassat, Quique, additional, van Hensbroek, Michael Boele, additional, Durnez, Lies, additional, and Van Bortel, Wim, additional

Published
2019
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25. MOESM6 of Passive case detection of malaria in Ratanakiri Province (Cambodia) to detect villages at higher risk for malaria

Author

Somony Heng, Durnez, Lies, Sokny Mao, Sovannaroth Siv, Sochantha Tho, Mean, Vanna, Sluydts, Vincent, and Coosemans, Marc

Subjects
parasitic diseases
Abstract

Additional file 6. Annual number of confirmed vivax malaria cases by village and vivax malaria incidence rate per 1000 inhabitants by commune. Although several villages did not report in 2010 and 2011 (37 and 28%, respectively), the number of confirmed malaria cases and incidence decreased steadily from 2012 to 2014.

Published
2017
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26. Is leaf pruning the key factor to successful biological control of aphids in sweet pepper?

Author

Brenard, Nathalie, Bosmans, Lien, Leirs, Herwig, De Bruyn, Luc, Sluydts, Vincent, and Moerkens, Rob

Subjects
SWEET peppers, APHID control, MIRIDAE, GREEN peach aphid, APHIDS, GREENHOUSE plants
Abstract

BACKGROUND: Aphids (Hemiptera: Aphididae) are a problematic pest in global sweet pepper cultivation. Control of aphids often relies on insecticides, leading to widespread resistance. Biological control of aphids is mainly based on releasing specialist natural enemies, but they often fail to control outbreaks. Macrolophus pygmaeus Rambur (Hemiptera: Miridae) is a zoophytophagous generalist which attacks several sweet pepper pests, including aphids. Previous research showed that M. pygmaeus is capable of strongly reducing aphid populations in sweet pepper, but complete control was seldom achieved. Sweet pepper plants continue to grow during the season, reaching > 3 m high in Belgian and Dutch greenhouses. Dense foliage and large vertical distance from the flowers to the lower leaves impede the search efficiency of the predator. Leaf pruning may improve aphid predation by M. pygmaeus by increasing the probability of encountering prey. RESULTS: Four and five treatments (foliage range: 100 cm to full length) respectively were tested in a semi‐commercial sweet pepper greenhouse in 2017 and 2018. Aphid populations in pruned treatments grew more slowly than in the control and M. pygmaeus was eventually able to control aphids in all pruned treatments in 2018. There was no difference in aphid control between the pruned treatments. Sweet pepper production was lower in the treatments with the shortest foliage lengths. CONCLUSION: Leaf pruning up to 160 or 190 cm foliage length improves aphid control by M. pygmaeus in sweet pepper without affecting production. © 2019 Society of Chemical Industry [ABSTRACT FROM AUTHOR]

Published
2020
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28. Arenavirus infection correlates with lower survival of its natural rodent host in a long-term capture-mark-recapture study

Author

Mariën, Joachim, primary, Sluydts, Vincent, additional, Borremans, Benny, additional, Gryseels, Sophie, additional, Vanden Broecke, Bram, additional, Sabuni, Christopher A., additional, Katakweba, Abdul A. S., additional, Mulungu, Loth S., additional, Günther, Stephan, additional, de Bellocq, Joëlle Goüy, additional, Massawe, Apia W., additional, and Leirs, Herwig, additional

Published
2018
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30. Esperanza Window Traps for the collection of anthropophilic blackflies (Diptera: Simuliidae) in Uganda and Tanzania

Author

Hendy, Adam, primary, Sluydts, Vincent, additional, Tushar, Taylor, additional, De Witte, Jacobus, additional, Odonga, Patrick, additional, Loum, Denis, additional, Nyaraga, Michael, additional, Lakwo, Thomson, additional, Dujardin, Jean-Claude, additional, Post, Rory, additional, Kalinga, Akili, additional, and Echodu, Richard, additional

Published
2017
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34. Geographical patterns of malaria transmission based on serological markers for falciparum and vivax malaria in Ratanakiri, Cambodia

Author

Kerkhof, Karen, primary, Sluydts, Vincent, additional, Heng, Somony, additional, Kim, Saorin, additional, Pareyn, Myrthe, additional, Willen, Laura, additional, Canier, Lydie, additional, Sovannaroth, Siv, additional, Ménard, Didier, additional, Sochantha, Tho, additional, Coosemans, Marc, additional, and Durnez, Lies, additional

Published
2016
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35. MOESM7 of Assuring access to topical mosquito repellents within an intensive distribution scheme: a case study in a remote province of Cambodia

Author

Somony Heng, Durnez, Lies, Gryseels, Charlotte, Roey, Karel Van, Mean, Vanna, Sambunny Uk, Sovannaroth Siv, Grietens, Koen, Sochantha, Tho, Coosemans, Marc, and Sluydts, Vincent

Abstract

Additional file 7. Univariate analysis of potential determinants for consumption. The table shows all results of univariate analysis looking for relationship between each of ten potential determinants and average two-weekly repellent consumption in 2012 and 2013.

Published
2015
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36. Protocol for semi‐automatic identification of whiteflies Bemisia tabaci and Trialeurodes vaporariorum on yellow sticky traps.

Author

Moerkens, Rob, Brenard, Nathalie, Bosmans, Lien, Reybroeck, Eva, Janssen, Dirk, Hemming, Jochen, and Sluydts, Vincent

Subjects
SWEETPOTATO whitefly, GREENHOUSE whitefly, ALEYRODIDAE, IMAGE analysis software, SWEET peppers, GREENHOUSE plants
Abstract

Yellow sticky traps (YSTs) are commonly used in greenhouse crops to monitor flying pest species. Whiteflies like Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae) and Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) are typically monitored using YSTs in tomato and sweet pepper crops. By counting the whiteflies on a YST, growers get an idea of the pests density in space and time in the greenhouse and can take pest control measurements accordingly. The downside is that manual counting of whiteflies on a YST is very time‐consuming and thus costly. A protocol to semi‐automate counting and identification of whiteflies on YSTs using image analysis software was developed to speed up the monitoring process. Bemisia tabaci is on average smaller than T. vaporariorum and by discriminating by size based on the amount of pixels in digital images, ratios of both species in a mixed population on YSTs could be estimated accurately. At low densities, the countings of different YSTs should be pooled till a 200 density threshold is reached in order to get accurate ratio estimates of both species. This study provides a protocol to reliably count and identify whiteflies semi‐automatically on standardized pictures. More research is required to develop alternative techniques to make standardized pictures in the field (e.g., with smartphone). [ABSTRACT FROM AUTHOR]

Published
2019
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38. Assuring access to topical mosquito repellents within an intensive distribution scheme: a case study in a remote province of Cambodia

Author

Heng, Somony, primary, Durnez, Lies, additional, Gryseels, Charlotte, additional, Van Roey, Karel, additional, Mean, Vanna, additional, Uk, Sambunny, additional, Siv, Sovannaroth, additional, Grietens, Koen Peeters, additional, Sochantha, Tho, additional, Coosemans, Marc, additional, and Sluydts, Vincent, additional

Published
2015
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39. Characterizing Types of Human Mobility to Inform Differential and Targeted Malaria Elimination Strategies in Northeast Cambodia

Author

Peeters Grietens, Koen, primary, Gryseels, Charlotte, additional, Dierickx, Susan, additional, Bannister-Tyrrell, Melanie, additional, Trienekens, Suzan, additional, Uk, Sambunny, additional, Phoeuk, Pisen, additional, Suon, Sokha, additional, Set, Srun, additional, Gerrets, René, additional, Hoibak, Sarah, additional, Muela Ribera, Joan, additional, Hausmann-Muela, Susanna, additional, Tho, Sochantha, additional, Durnez, Lies, additional, Sluydts, Vincent, additional, d’Alessandro, Umberto, additional, Coosemans, Marc, additional, and Erhart, Annette, additional

Published
2015
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40. Factors influencing the use of topical repellents: implications for the effectiveness of malaria elimination strategies

Author

Gryseels, Charlotte, primary, Uk, Sambunny, additional, Sluydts, Vincent, additional, Durnez, Lies, additional, Phoeuk, Pisen, additional, Suon, Sokha, additional, Set, Srun, additional, Heng, Somony, additional, Siv, Sovannaroth, additional, Gerrets, René, additional, Tho, Sochantha, additional, Coosemans, Marc, additional, and Peeters Grietens, Koen, additional

Published
2015
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42. Implementation and application of a multiplex assay to detect malaria-specific antibodies: a promising tool for assessing malaria transmission in Southeast Asian pre-elimination areas

Author

Kerkhof, Karen, primary, Canier, Lydie, additional, Kim, Saorin, additional, Heng, Somony, additional, Sochantha, Tho, additional, Sovannaroth, Siv, additional, Vigan-Womas, Inès, additional, Coosemans, Marc, additional, Sluydts, Vincent, additional, Ménard, Didier, additional, and Durnez, Lies, additional

Published
2015
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43. Re-imagining malaria: heterogeneity of human and mosquito behaviour in relation to residual malaria transmission in Cambodia

Author

Gryseels, Charlotte, primary, Durnez, Lies, additional, Gerrets, René, additional, Uk, Sambunny, additional, Suon, Sokha, additional, Set, Srun, additional, Phoeuk, Pisen, additional, Sluydts, Vincent, additional, Heng, Somony, additional, Sochantha, Tho, additional, Coosemans, Marc, additional, and Peeters Grietens, Koen, additional

Published
2015
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46. Rodent outbreaks in sub-Saharan Africa

Author

Leirs, Herwig, Sluydts, Vincent, Makundi, Rhodes, Singleton, Grant, Belmain, Steve, Brown, Peter, and Hardy, Bill

Subjects
Biology
Published
2010

49. Passive case detection of malaria in Ratanakiri Province (Cambodia) to detect villages at higher risk for malaria.

Author

Somony Heng, Durnez, Lies, Sokny Mao, Coosemans, Marc, Sochantha Tho, Mean, Vanna, Sluydts, Vincent, and Siv, Sovannaroth

Subjects
MALARIA, CAMBODIAN politics & government, PLASMODIUM, DISEASE incidence, EPIDEMIOLOGY, HEALTH facilities
Abstract

Background: Cambodia reduced malaria incidence by more than 75% between 2000 and 2015, a target of the Millennium Development Goal 6. The Cambodian Government aims to eliminate all forms of malaria by 2025. The country's malaria incidence is highly variable at provincial level, but less is known at village level. This study used passive case detection (PCD) data at village level in Ratanakiri Province from 2010 to 2014 to describe incidence trends and identify high-risk areas of malaria to be primarily targeted towards malaria elimination. Methods: In 2010, the Cambodian malaria programme created a Malaria Information System (MIS) to capture malaria information at village level through PCD by village malaria workers and health facilities. The MIS data of Ratanakiri Province 2010-2014 were used to calculate annual incidence rates by Plasmodium species at province and commune levels. For estimating the trend at provincial level only villages reporting each year were selected. The communal incidences and the number of cases per village were visualized on a map per Plasmodium species and per year. Analysis of spatial clustering of village malaria cases by Plasmodium species was performed by year. Results: Overall, malaria annual incidence rates per 1000 inhabitants decreased from 86 (2010) to 30 (2014). Falciparum incidence decreased (by 79% in 2014 compared to 2010; CI 95% 76-82%) more rapidly than vivax incidence (by 19% in 2014 compared to 2010; CI 95% 5-32%). There were ten to 16 significant spatial clusters each year. Big clusters tended to extend along the Cambodian-Vietnamese border and along the Sesan River. Three clusters appeared throughout all years (2010-2014): one with 21 villages appeared each year, the second shrunk progressively from 2012 to 2014 and the third was split into two smaller clusters in 2013 and 2014. Conclusion: The decline of malaria burden can be attributed to intensive malaria control activities implemented in the areas: distribution of a long-lasting insecticidal net per person and early diagnosis and prompt treatment. Dihydro-artemisinin piperaquine was the only first-line treatment for all malaria cases. No radical treatment with primaquine was provided for Plasmodium vivax cases, which could explain the slow decrease of P. vivax due to relapses. To achieve malaria elimination by 2025, priority should be given to the control of stable malaria clusters appearing over time. [ABSTRACT FROM AUTHOR]

Published
2017
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50. Spatial clustering and risk factors of malaria infections in Ratanakiri Province, Cambodia

Author

Sluydts, Vincent, primary, Heng, Somony, additional, Coosemans, Marc, additional, Van Roey, Karel, additional, Gryseels, Charlotte, additional, Canier, Lydie, additional, Kim, Saorin, additional, Khim, Nimol, additional, Siv, Sovannaroth, additional, Mean, Vanna, additional, Uk, Sambunny, additional, Grietens, Koen Peeters, additional, Tho, Sochantha, additional, Menard, Didier, additional, and Durnez, Lies, additional

Published
2014
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