H1N1 (swine) and H3N2 (avian) viruses still circulate globally as seasonal flu viruses. WHO declared 2009 H1N1 pandemic over in August 2010-CNN

Feb. 25, 2020, “What is a pandemic?" CNN, Jacqueline Howard

“In 1968, a pandemic caused by an influenza A H3N2 virus that originated in China swept the world. That virus was comprised of two genes from an avian influenza A virus, according to the CDC. The virus was first noted in the United States in September 1968….Most excess deaths were in adults 65 and older, according to the CDC.

The H3N2 virus continues to circulate globally as a seasonal flu virus.

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In the spring 2009, a novel influenza A H1N1 virus emerged. It was detected first in the United States and then spread quickly across the world.…It was found to be of swine origin....

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The World Health Organization declared the global H1N1 pandemic over in August 2010, but the H1N1 virus continues to circulate as a seasonal flu virus every year.”…

 

 

 

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