CDC Updates H1N1-Related Estimates

The CDC estimates that between 41 million and 84 million cases of 2009 H1N1 occurred between April 2009 and January 16, 2010. The mid-level in this range is about 57 million people infected with 2009 H1N1. The agency also estimates that between about 183,000 and 378,000 H1N1-related hospitalizations occurred between April 2009 and Jan. 16, 2009. The mid-level in this range is about 257,000 2009 H1N1-related hospitalizations. Between about 8,330 and 17,160 2009 H1N1-related deaths occurred between April 2009 and Jan. 16, 2010. The mid-level in this range is about 11,690 2009 H1N1-related deaths. Less than 5 percent of increases in the estimates from one reporting date to the next are the result of delayed reporting in cases, hospitalizations and deaths.