The first novel H1N1 patient in the US was confirmed by laboratory testing at CDC on April 15, 2009. The second patient was confirmed on April 17, 2009. From then, experts confirmed that the virus was spreading from person-to-person. It’s thought to spread in the same way that regular seasonal influenza viruses spread; mainly through the coughs and sneezes of people who are infected by the virus.On April 22, CDC activated its Emergency Operations Center to alert the public health office and so on April 26, 2009, US Government declared a public health emergency.
At the onset of the outbreak , an increasing number of U.S. states have reported cases of novel H1N1 influenza with associated hospitalizations and deaths. June 3, 2009, all 50 states in the US and the District of Columbia and Puerto Rico were reporting cases of novel H1N1 infection as well. While nationwide U.S. influenza surveillance systems determine that overall influenza activity is decreasing in the country continuously, novel H1N1 outbreaks are ongoing in parts of the U.S., in some cases with intense activity.
Nonetheless, people should not worry for most patients who have become ill with novel H1N1 in the United States have recovered without requiring medical treatment and have experienced typical flu symptoms.
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