Search results
Results From The WOW.Com Content Network
A significant outbreak of Influenza A virus subtype H7N9 (A/H7N9) started in March 2013 when severe influenza affected 18 humans in China; six subsequently died. [14] It was discovered that a low pathogenic strain of A/H7N9 was circulating among chickens, and that all the affected people had been exposed in poultry markets. [34]
In the 21st century, a strain of H1N1 flu (since titled "H1N1pdm09") was antigenically very different from previous H1N1 strains, leading to a pandemic in 2009. Because of its close resemblance to some strains circulating in pigs, this became known as "swine flu". [45] Influenza A virus continues to circulate and evolve in birds and pigs.
[14] [15] [16] The pandemic infected an estimated 500,000 Hong Kong residents, 15% of the population, with a low death rate. [17] In the United States, about 100,000 people died. [18] Both the H2N2 and H3N2 pandemic flu strains contained genes from avian influenza viruses. The new subtypes arose in pigs coinfected with avian and human viruses ...
Generally after each influenza pandemic, the pandemic strain continues to circulate as the cause of seasonal influenza, replacing prior strains. [1] From 1700 to 1889, influenza pandemics occurred about once every 50–60 years. Since then, pandemics have occurred about once every 10–50 years, so they may be getting more frequent over time. [68]
Influenza A virus subtype H1N1 (A/H1N1) is a subtype of influenza A virus (IAV). Some human-adapted strains of H1N1 are endemic in humans and are one cause of seasonal influenza (flu). [1] Other strains of H1N1 are endemic in pigs (swine influenza) and in birds (avian influenza). [2]
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). [ 1 ]
Fever of 102.5–105.0 °F (39.2–40.6 °C), frequent dry cough for several weeks, ‘drippy’ nose with discharge and secondary bacterial infection are some of the clinical signs of Equine influenza virus infection. isolation of influenza virus from nasopharyngeal and or large rise in antibody titer in equine-1 or 2 serum can be used as ...
[35] [36] In Uruguay the death of ten swans found in the locality of Estación Tapia was attributed to flu. [36] Previously in Uruguay ten hens had died because of the flu in El Monarca, Montevideo. [36] In late March 2023, Chile detected H5N1 in a 53-year-old man who had severe symptoms. [37] The patient survived but had to stay on a ventilator.