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2. California child is presumed positive for bird flu - AOL

   www.aol.com/california-child-presumed-positive...

   When the child developed symptoms, they were checked for RSV, Covid-19 and the flu, and they tested positive for influenza A. Across the US, labs are sequencing all influenza A viruses to learn ...

3. Influenza A virus - Wikipedia

   en.wikipedia.org/wiki/Influenza_A_virus

   Influenza viruses A and B are estimated to have diverged from a single ancestor around 4,000 years ago, while the ancestor of influenza viruses A and B and the ancestor of influenza virus C are estimated to have diverged from a common ancestor around 8,000 years ago. [40] Outbreaks of influenza-like disease can be found throughout recorded history.

4. Influenza A vs. Influenza B: Which Flu Virus Is Worse? - AOL

   www.aol.com/influenza-vs-influenza-b-flu...

   There are four different types of influenza virus: A, B, C, and D. Influenza C usually causes only mild illness while D mostly affects animals, especially cattle.

5. Farmers will now get paid to test their dairy cows for bird flu

   www.aol.com/news/farmers-now-paid-test-dairy...

   Among those, 112 were positive. ... is showing high levels of influenza A in the Midwest and Northeast. That’s unusual for mid-May, well past the typical flu season. The bird flu is a type of ...

6. Influenza-like illness - Wikipedia

   en.wikipedia.org/wiki/Influenza-like_illness

   In the United States during the 2008–9 influenza season through 18 April, out of 183,839 samples tested and reported to the CDC, only 25,925 (14.1%) were positive for influenza. The percent positive reached a maximum of about 25%. [5] The percent positive increases with the incidence of infection, peaking with the peak incidence of influenza ...

7. Influenza - Wikipedia

   en.wikipedia.org/wiki/Influenza

   Influenza A virus and influenza B virus circulate in humans and cause seasonal epidemics, and influenza C virus causes a mild infection, primarily in children. Influenza D virus can infect humans but is not known to cause illness. In humans, influenza viruses are primarily transmitted through respiratory droplets from coughing and sneezing.

8. The symptoms of influenza A and B can be identical, experts ...

   www.aol.com/news/symptoms-influenza-b-identical...

   It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals. But not all influenza is the same. There are some notable differences between flu A and flu B strains ...

9. 2009 swine flu pandemic in the United States - Wikipedia

   en.wikipedia.org/wiki/2009_swine_flu_pandemic_in...

   Changes in surveillance of cases of influenza-like illness, including new guidelines for identifying cases to test, increased laboratory testing, and new test kits able to distinguish this novel strain, resulted in a spike in the percent of cases tested positive for influenza. Of the positive cases, about a third were due to the novel strain ...