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6 results on '"Iolanda Vieira Anahory"'

1. H7N6 highly pathogenic avian influenza in Mozambique, 2023

Author

Iolanda Vieira Anahory Monjane, Hernâni Djedje, Esmeralda Tamele, Virgínia Nhabomba, Almiro Rogério Tivane, Zacarias Elias Massicame, Dercília Mudanisse Arone, Ambra Pastori, Alessio Bortolami, Isabella Monne, Timothy Woma, Charles E. Lamien, and William G. Dundon

Subjects
Highly pathogenic avian influenza, H7N6, Mozambique, poultry, outbreak, Infectious and parasitic diseases, RC109-216, Microbiology, QR1-502
Abstract

ABSTRACTOn 13 October 2023, the National Directorate for Livestock Development in Mozambique was notified of a suspected outbreak of avian influenza in commercial layers. Samples were screened by real-time and conventional RT–PCR and were positive for both H7 and N6. Full genome sequences were obtained for three representative samples. Sequence analysis of the H7 cleavage site confirmed that the viruses were highly pathogenic (i.e. 333- PEPPKGPRFRR/GLF-346). In addition, the H7 and N6 sequences were highly similar (from 99.4-99.5% and 99.6-99.7% for the HA gene and the NA gene, respectively) to the sequences of a H7N6 virus identified in the Republic of South Africa in May 2023 indicating a similar origin of the viruses. The identification of H7N6 HPAIV in Mozambique has important implications for disease management and food security in the region.

Published
2024
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2. A Phylogeographic Analysis of Porcine Parvovirus 1 in Africa

Author

Giovanni Franzo, Habibata Lamouni Zerbo, Bruno Lalidia Ouoba, Adama Drabo Dji-Tombo, Marietou Guitti Kindo, Rasablaga Sawadogo, Jelly Chang’a, Stella Bitanyi, Aloyce Kamigwe, Charles Mayenga, Modou Moustapha Lo, Mbengué Ndiaye, Aminata Ba, Gaye Laye Diop, Iolanda Vieira Anahory, Lourenço P. Mapaco, Sara J. Achá, Valere Kouame Kouakou, Emmanuel Couacy-Hymann, Stephen G. Gacheru, Jacqueline K. Lichoti, Justus K. Kasivalu, Obadiah N. Njagi, Tirumala B. K. Settypalli, Giovanni Cattoli, Charles E. Lamien, Umberto Molini, and William G. Dundon

Subjects
porcine parvovirus 1, Africa, epidemiology, phylogeography, phylogeny, VP2, Microbiology, QR1-502
Abstract

Porcine parvovirus 1 (PPV1) is recognized as a major cause of reproductive failure in pigs, leading to several clinical outcomes globally known as SMEDI. Despite being known since the late 1960s its circulation is still of relevance to swine producers. Additionally, the emergence of variants such as the virulent 27a strain, for which lower protection induced by vaccines has been demonstrated, is of increasing concern. Even though constant monitoring of PPV1 using molecular epidemiological approaches is of pivotal importance, viral sequence data are scarce especially in low-income countries. To fill this gap, a collection of 71 partial VP2 sequences originating from eight African countries (Burkina Faso, Côte d’Ivoire, Kenya, Mozambique, Namibia, Nigeria, Senegal, and Tanzania) during the period 2011–2021 were analyzed within the context of global PPV1 variability. The observed pattern largely reflected what has been observed in high-income regions, i.e., 27a-like strains were more frequently detected than less virulent NADL-8-like strains. A phylogeographic analysis supported this observation, highlighting that the African scenario has been largely shaped by multiple PPV1 importation events from other continents, especially Europe and Asia. The existence of such an international movement coupled with the circulation of potential vaccine-escape variants requires the careful evaluation of the control strategies to prevent new strain introduction and persistence.

Published
2023
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3. H7N6 highly pathogenic avian influenza in Mozambique, 2023

Author

Monjane, Iolanda Vieira Anahory, primary, Djedje, Hernâni, additional, Tamele, Esmeralda, additional, Nhabomba, Virgínia, additional, Tivane, Almiro Rogério, additional, Massicame, Zacarias Elias, additional, Arone, Dercília Mudanisse, additional, Pastori, Ambra, additional, Bortolami, Alessio, additional, Monne, Isabella, additional, Woma, Timothy, additional, Lamien, Charles E., additional, and Dundon, William G., additional

Published
2024
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4. Identification of porcine circovirus-3 in Mozambique

Author

Umberto Molini, Iolanda Vieira Anahory, Sara J Achá, William G. Dundon, Lourenço P Mapaco, Tirumala B. K. Settypalli, Charles Euloge Lamien, Giovanni Franzo, and Giovanni Cattoli

Subjects
Porcine circovirus, General Veterinary, African swine fever, biology, Phylogenetic tree, Context (language use), General Medicine, biology.organism_classification, complex mixtures, Virology, Virus, Co infection
Abstract

Porcine circovirus 3 (PCV-3) has been associated with an assortment of clinical conditions in pigs and has been reported in many countries worldwide. In Africa there is no data on the presence of PCV-3. In this study, DNA samples collected from 91 pigs between 2011 and 2019 in nine of the ten provinces of Mozambique in the context of African swine fever (ASF) monitoring were further screened for the presence of PCV-3. Of these samples, 7 (7.5%) animals were positive for PCV-3. Sequence and phylogenetic analysis of the capsid protein gene (ORF2) of the PCV-3s provided evidence of epidemiological links with PCV-3s identified in North and South America, Asia, and Europe. This is the first identification of PCV-3 in Mozambique (and Africa) and the first evidence of co-infection of PCV-3 and ASF virus. It should provide a starting point for further investigations into the presence and impact of PCV-3 in Africa.

Published
2021

5. Porcine circovirus-2 in Africa: Identification of continent-specific clusters and evidence of independent viral introductions from Europe, North America and Asia

Author

Germaine L Minoungou, Martha Yami, G. Dautu, Charles Mayenga, Adeyinka Jeremy Adedeji, Bruno Lalidia Ouoba, David Shamaki, Iolanda Vieira Anahory, Lourenço P Mapaco, Ebere Roseann Agusi, Tirumala B. K. Settypalli, Bishop Magidanga, Giovanni Cattoli, M. Diop, Mame Thierno Bakhoum, William G. Dundon, Jeremiah Ijomanta, Anvou Rachael Jambol, Modou Moustapha Lo, Jelly S Chang'a, Zerbo Lamouni Habibata, Maureen Wakwamba Ziba, Giovanni Franzo, Curé Georges Tshilenge, José Luís de Barros, Pam Dachung Luka, Sara J Achá, Charles Euloge Lamien, Abel Wade, Charles Masembe, Jenna Elizabeth Achenbach, Daniel Gizaw, Umberto Molini, Esayas Gelaye, Clement Meseko, and Tesfaye Rufael Chibssa

Subjects
Circovirus, Swine, Nigeria, phylogeographic analysis, complex mixtures, Cape verde, Farm level, genotypes, parasitic diseases, Genotype, Animals, Circoviridae Infections, Socioeconomics, Swine Diseases, General Veterinary, General Immunology and Microbiology, biology, porcine circovirus-2, Africa, General Medicine, biology.organism_classification, Orf2 gene, Europe, Phylogeography, Porcine circovirus, Tanzania, Geography, DNA, Viral, Identification (biology)
Abstract

Porcine circovirus-2 (PCV-2) is associated with several disease syndromes in domestic pigs that have a significant impact on global pig production and health. Currently, little is known about the status of PCV-2 in Africa. In this study, a total of 408 archived DNA samples collected from pigs in Burkina Faso, Cameroon, Cape Verde, Ethiopia, the Democratic Republic of the Congo, Mozambique, Nigeria, Senegal, Tanzania, and Zambia between 2000 and 2018 were screened by PCR for the presence of PCV-2. Positive amplicons of the gene encoding the viral capsid protein (ORF2) were sequenced to determine the genotypes circulating in each country. Four of the nine currently known genotypes of PCV-2 were identified (i.e. PCV-2a, PCV-2b, PCV-2d and PCV-2g) with more than one genotype being identified in Burkina Faso, Ethiopia, Nigeria, Mozambique, Senegal and Zambia. Additionally, a phylogeographic analysis which included 38 additional ORF2 gene sequences of PCV-2s previously identified in Mozambique, Namibia and South Africa from 2014 to 2016 and 2019 to 2020 and available in public databases, demonstrated the existence of several African-specific clusters and estimated the approximate time of introduction of PCV-2s into Africa from other continents. This is the first in-depth study of PCV-2 in Africa and it has important implications for pig production at both the small-holder and commercial farm level on the continent. This article is protected by copyright. All rights reserved.

Published
2021

6. Identification of porcine circovirus-3 in Mozambique

Author

Iolanda Vieira, Anahory, Giovanni, Franzo, Tirumala B K, Settypalli, Lourenço P, Mapaco, Sara J, Achá, Umberto, Molini, Giovanni, Cattoli, Charles E, Lamien, and William G, Dundon

Subjects
Circovirus, Swine Diseases, Swine, Animals, Circoviridae Infections, African Swine Fever, Mozambique, Phylogeny
Abstract

Porcine circovirus 3 (PCV-3) has been associated with an assortment of clinical conditions in pigs and has been reported in many countries worldwide. In Africa there is no data on the presence of PCV-3. In this study, DNA samples collected from 91 pigs between 2011 and 2019 in nine of the ten provinces of Mozambique in the context of African swine fever (ASF) monitoring were further screened for the presence of PCV-3. Of these samples, 7 (7.5%) animals were positive for PCV-3. Sequence and phylogenetic analysis of the capsid protein gene (ORF2) of the PCV-3s provided evidence of epidemiological links with PCV-3s identified in North and South America, Asia, and Europe. This is the first identification of PCV-3 in Mozambique (and Africa) and the first evidence of co-infection of PCV-3 and ASF virus. It should provide a starting point for further investigations into the presence and impact of PCV-3 in Africa.

Published
2021

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