Answers to questions about the virus A H1N1 gripe.
What is Influenza A H1N1?
The new H1N1 flu is an infection that affects men by a flu-like virus which usually infects animals (pigs).
In the current epidemic, the viruses isolated from patients are viruses that belong to the A H1N1.
In this case, it's not a swine flu. This is a virus infection that developed in pigs but now is spread from person to person.
This virus is different from the H1N1 seasonal flu viruses of human origin that usually circulates.
