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Source: Emerging Infectious Diseases
Infectious Disease: Influenza
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Total 221 results found since Jan 2013.
Limited Outbreak of Highly Pathogenic Influenza A(H5N1) in Herring Gull Colony, Canada, 2022
Emerg Infect Dis. 2023 Aug 24;29(10). doi: 10.3201/eid2910.230536. Online ahead of print.ABSTRACTIn summer 2022, highly pathogenic influenza A(H5N1) virus reached the herring gull (Larus argentatus subspecies smithsonianus) breeding colony on Kent Island, New Brunswick, Canada. Real-time monitoring revealed a self-limiting outbreak with low mortality. Proactive seabird surveillance is crucial for monitoring such limited outbreaks, protecting seabirds, and tracing zoonotic transmission routes.PMID:37619593 | DOI:10.3201/eid2910.230536
Source: Emerging Infectious Diseases - August 24, 2023 Category: Infectious Diseases Authors: Liam U Taylor Robert A Ronconi Hayley A Spina Megan E B Jones C Brandon Ogbunugafor Andrea J Ayala Source Type: research
Interspecies Transmission of Swine Influenza A Viruses and Human Seasonal Vaccine-Mediated Protection Investigated in Ferret Model
Emerg Infect Dis. 2023 Sep;29(9):1798-1807. doi: 10.3201/eid2909.230066.ABSTRACTWe investigated the infection dynamics of 2 influenza A(H1N1) virus isolates from the swine 1A.3.3.2 (pandemic 2009) and 1C (Eurasian, avian-like) lineages. The 1C-lineage virus, A/Pavia/65/2016, although phylogenetically related to swine-origin viruses, was isolated from a human clinical case. This strain infected ferrets, a human influenza model species, and could be transmitted by direct contact and, less efficiently, by airborne exposure. Infecting ferrets and pigs (the natural host) resulted in mild or inapparent clinical signs comparable ...
Source: Emerging Infectious Diseases - August 23, 2023 Category: Infectious Diseases Authors: Pauline M van Diemen Alexander M P Byrne Andrew M Ramsay Samantha Watson Alejandro Nunez Ana V Moreno Chiara Chiapponi Emanuela Foni Ian H Brown Sharon M Brookes Helen E Everett Source Type: research
Shifting Patterns of Influenza Circulation during the COVID-19 Pandemic, Senegal
Emerg Infect Dis. 2023 Sep;29(9):1808-1817. doi: 10.3201/eid2909.230307.ABSTRACTHistorically low levels of seasonal influenza circulation were reported during the first years of the COVID-19 pandemic and were mainly attributed to implementation of nonpharmaceutical interventions. In tropical regions, influenza's seasonality differs largely, and data on this topic are scarce. We analyzed data from Senegal's sentinel syndromic surveillance network before and after the start of the COVID-19 pandemic to assess changes in influenza circulation. We found that influenza shows year-round circulation in Senegal and has 2 distinct e...
Source: Emerging Infectious Diseases - August 23, 2023 Category: Infectious Diseases Authors: Alexandre Lampros Cheikh Talla Maryam Diarra Billo Tall Samba Sagne Mamadou Korka Diallo Boly Diop Ibrahim Oumar Ndongo Dia Amadou Alpha Sall Mamadou Aliou Barry Cheikh Loucoubar Source Type: research
Interspecies Transmission of Swine Influenza A Viruses and Human Seasonal Vaccine-Mediated Protection Investigated in Ferret Model
Emerg Infect Dis. 2023 Sep;29(9):1798-1807. doi: 10.3201/eid2909.230066.ABSTRACTWe investigated the infection dynamics of 2 influenza A(H1N1) virus isolates from the swine 1A.3.3.2 (pandemic 2009) and 1C (Eurasian, avian-like) lineages. The 1C-lineage virus, A/Pavia/65/2016, although phylogenetically related to swine-origin viruses, was isolated from a human clinical case. This strain infected ferrets, a human influenza model species, and could be transmitted by direct contact and, less efficiently, by airborne exposure. Infecting ferrets and pigs (the natural host) resulted in mild or inapparent clinical signs comparable ...
Source: Emerging Infectious Diseases - August 23, 2023 Category: Infectious Diseases Authors: Pauline M van Diemen Alexander M P Byrne Andrew M Ramsay Samantha Watson Alejandro Nunez Ana V Moreno Chiara Chiapponi Emanuela Foni Ian H Brown Sharon M Brookes Helen E Everett Source Type: research
Shifting Patterns of Influenza Circulation during the COVID-19 Pandemic, Senegal
Emerg Infect Dis. 2023 Sep;29(9):1808-1817. doi: 10.3201/eid2909.230307.ABSTRACTHistorically low levels of seasonal influenza circulation were reported during the first years of the COVID-19 pandemic and were mainly attributed to implementation of nonpharmaceutical interventions. In tropical regions, influenza's seasonality differs largely, and data on this topic are scarce. We analyzed data from Senegal's sentinel syndromic surveillance network before and after the start of the COVID-19 pandemic to assess changes in influenza circulation. We found that influenza shows year-round circulation in Senegal and has 2 distinct e...
Source: Emerging Infectious Diseases - August 23, 2023 Category: Infectious Diseases Authors: Alexandre Lampros Cheikh Talla Maryam Diarra Billo Tall Samba Sagne Mamadou Korka Diallo Boly Diop Ibrahim Oumar Ndongo Dia Amadou Alpha Sall Mamadou Aliou Barry Cheikh Loucoubar Source Type: research
Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus in Wild Birds, Chile
Emerg Infect Dis. 2023 Jul 24;29(9). doi: 10.3201/eid2909.230067. Online ahead of print.ABSTRACTIn December 2022, highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b virus emerged in Chile. We detected H5N1 virus in 93 samples and obtained 9 whole-genome sequences of strains from wild birds. Phylogenetic analysis suggests multiple viral introductions into South America. Continued surveillance is needed to assess risks to humans and domestic poultry.PMID:37487166 | DOI:10.3201/eid2909.230067
Source: Emerging Infectious Diseases - July 24, 2023 Category: Infectious Diseases Authors: Naomi Ariyama Catalina Pardo-Roa Gabriela Mu ñoz Carolina Aguayo Claudia Ávila Christian Mathieu Leonardo I Almonacid Rafael A Medina Barbara Brito Magdalena Johow Victor Neira Source Type: research
Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus in Domestic Cat, France, 2022
Emerg Infect Dis. 2023 Jun 28;29(8). doi: 10.3201/eid2908.230188. Online ahead of print.ABSTRACTWe detected highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b virus in a domestic cat that lived near a duck farm infected by a closely related virus in France during December 2022. Enhanced surveillance of symptomatic domestic carnivores in contact with infected birds is recommended to prevent further spread to mammals and humans.PMID:37379514 | DOI:10.3201/eid2908.230188
Source: Emerging Infectious Diseases - June 28, 2023 Category: Infectious Diseases Authors: Fran çois-Xavier Briand Florent Souchaud Isabelle Pierre V éronique Beven Edouard Hirchaud Fabrice H érault Ren é Planel Ang élina Rigaudeau Sibylle Bernard-Stoecklin Sylvie Van der Werf Bruno Lina Guillaume Gerbier Nicolas Eterradossi Audrey Schmitz Source Type: research
Long-Term Epidemiology and Evolution of Swine Influenza Viruses, Vietnam
Emerg Infect Dis. 2023 Jul;29(7):1397-1406. doi: 10.3201/eid2907.230165.ABSTRACTInfluenza A viruses are a One Health threat because they can spill over between host populations, including among humans, swine, and birds. Surveillance of swine influenza virus in Hanoi, Vietnam, during 2013-2019 revealed gene pool enrichment from imported swine from Asia and North America and showed long-term maintenance, persistence, and reassortment of virus lineages. Genome sequencing showed continuous enrichment of H1 and H3 diversity through repeat introduction of human virus variants and swine influenza viruses endemic in other countrie...
Source: Emerging Infectious Diseases - June 22, 2023 Category: Infectious Diseases Authors: Jonathan Cheung Anh Ngoc Bui Sonia Younas Kimberly M Edwards Huy Quang Nguyen Ngoc Thi Pham Vuong Nghia Bui Malik Peiris Vijaykrishna Dhanasekaran Source Type: research
Highly Pathogenic Avian Influenza Virus (H5N1) Clade 2.3.4.4b Introduced by Wild Birds, China, 2021
Emerg Infect Dis. 2023 Jul;29(7):1367-1375. doi: 10.3201/eid2907.221149.ABSTRACTHighly pathogenic avian influenza (HPAI) subtype H5N1 clade 2.3.4.4b virus has spread globally, causing unprecedented large-scale avian influenza outbreaks since 2020. In 2021, we isolated 17 highly pathogenic avian influenza H5N1 viruses from wild birds in China. To determine virus origin, we genetically analyzed 1,529 clade 2.3.4.4b H5N1 viruses reported globally since October 2020 and found that they formed 35 genotypes. The 17 viruses belonged to genotypes G07, which originated from eastern Asia, and G10, which originated from Russia. The v...
Source: Emerging Infectious Diseases - June 22, 2023 Category: Infectious Diseases Authors: Jingman Tian Xiaoli Bai Minghui Li Xianying Zeng Jia Xu Peng Li Miao Wang Xingdong Song Zhiguo Zhao Guobin Tian Liling Liu Yuntao Guan Yanbing Li Hualan Chen Source Type: research
Low Susceptibility of Pigs against Experimental Infection with HPAI Virus H5N1 Clade 2.3.4.4b
Emerg Infect Dis. 2023 Jul;29(7):1492-1495. doi: 10.3201/eid2907.230296.ABSTRACTWe found that nasal and alimentary experimental exposure of pigs to highly pathogenic avian influenza virus H5N1 clade 2.3.4.4b was associated with marginal viral replication, without inducing any clinical manifestation or pathological changes. Only 1 of 8 pigs seroconverted, pointing to high resistance of pigs to clade 2.3.4.4b infection.PMID:37347930 | DOI:10.3201/eid2907.230296
Source: Emerging Infectious Diseases - June 22, 2023 Category: Infectious Diseases Authors: Annika Graaf Ronja Piesche Julia Sehl-Ewert Christian Grund Anne Pohlmann Martin Beer Timm Harder Source Type: research
Surveillance and Genomic Characterization of Influenza A and D Viruses in Swine, Belgium and the Netherlands, 2019-2021
Emerg Infect Dis. 2023 Jul;29(7):1459-1464. doi: 10.3201/eid2907.221499.ABSTRACTDuring 2019-2021, we isolated 62 swine influenza A viruses in Belgium and the Netherlands. We also detected influenza D in pigs in the Netherlands. The ever-changing diversity of influenza viruses and the identification of influenza D emphasize the need for more virus surveillance.PMID:37347825 | DOI:10.3201/eid2907.221499
Source: Emerging Infectious Diseases - June 22, 2023 Category: Infectious Diseases Authors: Anna Parys Nick Vereecke Elien Vandoorn Sebastiaan Theuns Kristien Van Reeth Source Type: research
