Where did the 2009 swine flu originated?
The swine-origin influenza A (H1N1) virus that appeared in 2009 and was first found in human beings in Mexico, is a reassortant with at least three parents.
Six of the genes are closest in sequence to those of H1N2 ‘triple-reassortant’ influenza viruses isolated from pigs in North America around 1999-2000..
What country is believed to have been at the epicenter of the 2009 h1n1 outbreak?
In late April 2009, Mexico became the epicenter of the current influenza pandemic. International cooperation between Mexican, Canadian, and American public health authorities and scientists led to the rapid identification of a novel influenza A (H1N1) virus strain.
Where did swine flu start in the US?
In 1998, swine flu was found in pigs in four U.S. states. Within a year, it had spread through pig populations across the United States. Scientists found this virus had originated in pigs as a recombinant form of flu strains from birds and humans.
How long was the swine flu outbreak?
The 2009 swine flu pandemic was an influenza pandemic that lasted for about 19 months, from January 2009 to August 2010, and was the second of two pandemics involving H1N1 influenza virus (the first being the 1918–1920 Spanish flu pandemic).
Is there a vaccine for swine flu?
Vaccines have been developed to protect against the virus that causes swine flu. There are two different brands of vaccine – Pandemrix and Celvapan. Many people given the Pandemrix vaccine will only need one dose. People who have the Celvapan vaccine will need two doses three weeks apart.