Tuesday, December 01, 2015

Influenza A

The Influenza A virus causes influenza in birds and some mammals and is the only species of influenza virus A.
Influenza A viruses are negative sense, single-stranded, segmented RNA viruses.
The several subtypes are labeled according to an H number and an N number.
There are 18 different known H antigens (H1 to H18) and 11 different known N antigens (N1 to N11).
"Human influenza virus" usually refers to those subtypes that spread widely among humans.
H1N1, H1N2 and H3N2 are the only known influenza A virus subtypes currently circulating among humans.
  Symptoms include:
  • rapid onset of fever
  • headache
  • muscle aches
  • conjunctivitis
  • fatigue
  • sneezing
  • running nose
  • sore throat
  • a cough.
Most people recover within a week, although the cough and fatigue may last longer.
Both the co driver and I have been laid low by this for nearly three weeks now.
Vaccinations against the virus are available but in many cases ineffective.
This disease is really one to avoid!

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