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Influenza A(H1N1)pdm09 Virus Infection in a Captive Giant Panda, Hong Kong [PDF]

Emerging Infectious Diseases, 2019
We report influenza A(H1N1)pdm09 virus infection in a captive giant panda in Hong Kong. The viral load peaked on day 1 and became undetectable on day 5, and an antibody response developed.
Paolo Martelli, Jade L.L. Teng, Foo-Khong Lee, Kai-Yan Yeong, Jordan Y.H. Fong, Suk-Wai Hui, Kwok-Hung Chan, Susanna K.P. Lau, Patrick C.Y. Woo   +8 more
doaj   +5 more sources

Influenza A(H1N1)pdm09 Virus but Not Respiratory Syncytial Virus Interferes with SARS-CoV-2 Replication during Sequential Infections in Human Nasal Epithelial Cells [PDF]

Viruses, 2022
The types of interactions between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and other respiratory viruses are not well-characterized due to the low number of co-infection cases described since the onset of the pandemic.
Clément Fage, Mathilde Hénaut, Julie Carbonneau, Jocelyne Piret, Guy Boivin   +4 more
doaj   +2 more sources

Effect of Prior Influenza A(H1N1)pdm09 Virus Infection on Pathogenesis and Transmission of Human Influenza A(H5N1) Clade 2.3.4.4b Virus in Ferret Model [PDF]

Emerging Infectious Diseases
Reports of human infections with influenza A(H5N1) clade 2.3.4.4b viruses associated with outbreaks in dairy cows in the United States underscore the need to assess the potential cross-protection conferred by existing influenza immunity.
Xiangjie Sun, Jessica A. Belser, Zhu-Nan Li, Nicole Brock, Joanna A. Pulit-Penaloza, Troy J. Kieran, Claudia Pappas, Hui Zeng, Jessie C. Chang, Paul J. Carney, Brandon L. Bradley-Ferrell, James Stevens, Terrence M. Tumpey, Min Z. Levine, Taronna R. Maines   +14 more
doaj   +2 more sources

The free-living ciliate Tetrahymena pyriformis inactivates engulfed influenza A(H1N1)pdm09 virus via two distinct types of endosomes [PDF]

Scientific Reports
Wild aquatic birds are a major reservoir of the influenza A virus in natural ecosystems, facilitating its entry into the aquatic microbial food web through their feces. Free-living protozoa and particularly bacterivorous ciliates are essential players of
Valentina I. Pushkareva, Anastasia S. Krepkaia, Anna V. Ignatieva, Natalya V. Shevlyagina, Svetlana G. Andreevskaya, Elizaveta Fofanova, Elena V. Sysolyatina, Vladimir G. Zhukhovitsky, Elena I. Burtseva, Svetlana A. Ermolaeva   +9 more
doaj   +2 more sources

Incidence and epidemiology of hospitalized influenza cases in rural Thailand during the influenza A (H1N1)pdm09 pandemic, 2009-2010. [PDF]

PLoS ONE, 2012
BACKGROUND: Data on the burden of the 2009 influenza pandemic in Asia are limited. Influenza A(H1N1)pdm09 was first reported in Thailand in May 2009.
Henry C Baggett, Malinee Chittaganpitch, Somsak Thamthitiwat, Prabda Prapasiri, Sathapana Naorat, Pongpun Sawatwong, Darunee Ditsungnoen, Sonja J Olsen, James M Simmerman, Prasong Srisaengchai, Somrak Chantra, Leonard F Peruski, Pathom Sawanpanyalert, Susan A Maloney, Pasakorn Akarasewi   +14 more
doaj   +1 more source

The Mobility of Eurasian Avian-like M2 Is Determined by Residue E79 Which Is Essential for Pathogenicity of 2009 Pandemic H1N1 Influenza Virus in Mice

Viruses, 2023
In 2009, a novel H1N1 influenza virus caused the first influenza pandemic of the 21st century. Studies have shown that the influenza M gene played important roles in the pathogenicity and transmissibility of the 2009 H1N1 pandemic ((H1N1)pdm09), whilst ...
Rujuan Wu, Xinyu Zeng, Mingqing Wu, Lixiang Xie, Guanlong Xu, Yaqing Mao, Zhaofei Wang, Yuqiang Cheng, Heng’an Wang, Yaxian Yan, Jianhe Sun, Jingjiao Ma   +11 more
doaj   +1 more source

Eurasian Avian-like M1 Plays More Important Role than M2 in Pathogenicity of 2009 Pandemic H1N1 Influenza Virus in Mice

Viruses, 2021
Reassortant variant viruses generated between 2009 H1N1 pandemic influenza virus [A(H1N1)pdm09] and endemic swine influenza viruses posed a potential risk to humans. Surprisingly, genetic analysis showed that almost all of these variant viruses contained
Lixiang Xie, Guanlong Xu, Lingxiang Xin, Zhaofei Wang, Rujuan Wu, Mingqing Wu, Yuqiang Cheng, Hengan Wang, Yaxian Yan, Jingjiao Ma, Jianhe Sun   +10 more
doaj   +1 more source

An Investigation of Severe Influenza Cases in Russia during the 2022–2023 Epidemic Season and an Analysis of HA-D222G/N Polymorphism in Newly Emerged and Dominant Clade 6B.1A.5a.2a A(H1N1)pdm09 Viruses

Pathogens, 2023
In Russia, during the COVID-19 pandemic, a decrease in influenza circulation was initially observed. Influenza circulation re-emerged with the dominance of new clades of A(H3N2) viruses in 2021–2022 and A(H1N1)pdm09 viruses in 2022–2023.
Natalia P. Kolosova, Nikita D. Boldyrev, Svetlana V. Svyatchenko, Alexey V. Danilenko, Natalia I. Goncharova, Kyunnei N. Shadrinova, Elena I. Danilenko, Galina S. Onkhonova, Maksim N. Kosenko, Maria E. Antonets, Ivan M. Susloparov, Tatiana N. Ilyicheva, Vasily Y. Marchenko, Alexander B. Ryzhikov   +13 more
doaj   +1 more source

No Association between 2008–09 Influenza Vaccine and Influenza A(H1N1)pdm09 Virus Infection, Manitoba, Canada, 2009

Emerging Infectious Diseases, 2012
We conducted a population-based study in Manitoba, Canada, to investigate whether use of inactivated trivalent influenza vaccine (TIV) during the 2008–09 influenza season was associated with subsequent infection with influenza A(H1N1)pdm09 virus during ...
Salaheddin M. Mahmud, Paul Van Caeseele, Gregory Hammond, Carol Kurbis, Tim Hilderman, Lawrence Elliott   +5 more
doaj   +1 more source

Pandemic Influenza Virus Surveillance, Izu-Oshima Island, Japan

Emerging Infectious Diseases, 2012
A population-based influenza surveillance study (using PCR virus subtyping) on Izu-Oshima Island, Japan, found that the cumulative incidence of influenza A(H1N1)pdm09 virus infections 2 seasons after the pandemic was highest for those 10–14 years of age (
Tomoko Inamasu, Kouji Sudo, Shingo Kato, Hiroshi Deguchi, Manabu Ichikawa, Tadanori Shimizu, Tadami Maeda, Shuhei Fujimoto, Toru Takebayashi, Tomoya Saito   +9 more
doaj   +1 more source