2009 swine flu pandemic

The 2009 flu pandemic or swine flu was an influenza pandemic that lasted from early 2009 to late 2010, and the second of the two pandemics involving H1N1 influenza virus (first was the 1918–1920 Spanish flu pandemic and the second one was the 1977 Russian Flu).

2009 flu pandemic
50 000+ confirmed cases   5,000+ confirmed cases   500+ confirmed cases   50+ confirmed cases   5+ confirmed cases   1+ confirmed cases
Disease	Influenza
Virus strain	Pandemic H1N1/09 virus
Location	Worldwide
First outbreak	Veracruz, Mexico; North America
Index case	Early 2009
Arrival date	January 2009- August 10, 2010
Deaths	150,000–575,000 (Estaimated 284,000 deaths)

First described in April 2009, turned out to be a new strain of H1N1 which resulted when a previous triple reassortment of bird, swine and human flu viruses.^[1]

About 11–21% of the global population (About 6.8 billion), or around 700 million–1.4 billion people (Suspect cases) had affect the flu — more than Spanish flu pandemic.^[2][3]

However, with about 150,000–575,000 fatalities, it had a much lower case fatality rate of 0.01-0.08%.^[4]