What is H1N1 (swine) flu?
The 2009 novel H1N1 influenza A virus (previously referred to as “swine flu”) is an influenza virus causing illness in people. This new virus was first detected in people in the United States in April 2009. This virus is spreading from person-to-person worldwide, probably in much the same way that regular seasonal influenza viruses spread. On June 11, 2009, the World Health Organization (WHO) signaled that a pandemic was underway.
H1N1 (referred to as “swine flu” early on) is a new influenza virus causing illness in people. This new virus was first detected in people in April 2009. The virus causing the current influenza outbreak is not a swine flu virus, but a combination of human, swine and bird viruses. This virus is spreading from person-to-person, probably in much the same way that regular seasonal influenza viruses spread.
H1N1 flu (swine flu) is a new influenza virus causing illness in people. This new virus was first detected in people in the United States in April 2009. This virus spreads from person to person, in much the same way that regular seasonal influenza viruses spread. Because H1N1 is a new strain of influenza, most people have little immunity to it either naturally or from previous flu vaccines.
