During the 2013-2014 season, influenza A (H3N2), 2009 influenza A (H1N1), and influenza B viruses circulated in the United States.

Estimated influenza disease burden, by age group — United States, 2012-2013 influenza season

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.

An H7N9 virus was first reported to have infected humans in March 2013, in China….Influenza A virus subtype H7N9.

The Ebola virus epidemic burst in West Africa in late 2013, started in Guinea, reached in a few months an alarming diffusion, actually involving several countries (Liberia, Sierra Leone, Nigeria, Senegal, and Mali).

Influenza A viruses predominated until the end of February 2013, after which influenza B viruses were detected more often.

From April 12, 2009 to April 10, 2010, the CDC estimates there were 60.8 million cases (range: 43.3 – 89.3 million), 274,304 hospitalizations (range: 195,086 – 402,719), and 12,469 deaths (range: 8868 – 18,306) in the United States due to the virus.

Is There a Vaccine for Swine Flu? The same flu vaccine that protects against seasonal flu also protects against the H1N1 swine flu strain. You can get it as a shot or as a nasal spray.

Several antiviral agents have been reported to help prevent or reduce the effects of swine flu. The most used are zanamivir (Relenza) and oseltamivir (Tamiflu), both of which are also used to prevent or reduce influenza A and B symptoms.

Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses do not usually infect humans, but rare human infections have occurred. (For more information about swine influenza infections in humans, see Variant Influenza Viruses in Humans ).

H1N1 and H3N2 swine flu viruses are endemic among pig populations in the United States and something that the industry deals with routinely. Outbreaks among pigs normally occur in colder weather months (late fall and winter), but can occur year round.

Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs.

The H3N2 viruses initially were introduced into the pig population from humans. However, since then the H3N2 viruses circulating in pigs have changed. The H3N2 viruses circulating in pigs now are very different from the seasonal H3N2 viruses that circulate in humans.