UK public health officials on Monday said they had confirmed a first human case of a swine flu strain similar to one that has been circulating in pigs.
Nov 27, 2023
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Coinfection of SARS-CoV-2 and influenza A virus changes neither the trajectory, nor the severity of influenza A virus, regardless of timing. But should the host contract influenza A virus first, the response to that infection ...
Jul 12, 2022
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More than two years into the COVID-19 pandemic, people are realizing that the "new normal" will probably involve learning to co-exist with SARS-CoV-2. Some treatments are available, but with new variants emerging, researchers ...
Jun 29, 2022
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Restrictions have eased, international borders are open and influenza is back in Australia after a two-year absence.
Jun 20, 2022
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It happens every year, especially in winter. A virus saunters into your wide-open respiratory tract, worms its way into lung cells, and, next thing you know, you're lying in bed with a fever, aches, and chills—classic symptoms ...
Jun 1, 2022
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Cases of flu and respiratory syncytial virus (RSV) fell significantly in both adults and children during the COVID-19 pandemic, according to new research being presented at the European Congress of Clinical Microbiology & ...
Jul 8, 2021
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Researchers have identified two antibodies that protect mice against lethal infections of influenza B virus, report scientists at Washington University School of Medicine in St. Louis and Icahn School of Medicine at Mount ...
Sep 24, 2020
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In the United States, the 2018 to 2019 influenza season was of moderate severity and lasted 21 weeks, according to research published in the June 21 issue of the U.S. Centers for Disease Control and Prevention Morbidity and ...
Jun 21, 2019
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Pathologists at Houston Methodist developed a real-time website to track flu cases, just in time to assist physicians, the CDC and patients for the fall 2018 flu season.
Dec 6, 2018
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Another flu season is here, which means another chance for viruses to mutate. Already, most influenza A viruses contain a mutation that confers resistance against one class of antiviral medications, and the bugs are steadily ...
Oct 24, 2018
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Influenzavirus A Influenzavirus B Influenzavirus C Isavirus Thogotovirus
Influenzavirus A is a genus of the Orthomyxoviridae family of viruses. Influenzavirus A includes only one species: Influenza A virus which causes influenza in birds and some mammals. Strains of all subtypes of influenza A virus have been isolated from wild birds, although disease is uncommon. Some isolates of influenza A virus cause severe disease both in domestic poultry and, rarely, in humans. Occasionally viruses are transmitted from wild aquatic birds to domestic poultry and this may cause an outbreak or give rise to human influenza pandemics.
Influenza A viruses are negative sense, single-stranded, segmented RNA viruses. There are several subtypes, labeled according to an H number (for the type of hemagglutinin) and an N number (for the type of neuraminidase). There are 16 different H antigens (H1 to H16) and nine different N antigens (N1 to N9). The newest H type (H16) was isolated from black-headed gulls caught in Sweden and the Netherlands in 1999 and reported in the literature in 2005.
Each virus subtype has mutated into a variety of strains with differing pathogenic profiles; some pathogenic to one species but not others, some pathogenic to multiple species.
This text uses material from Wikipedia, licensed under CC BY-SA
