The Centers for Disease Control and Prevention recently updated its estimates of the number of Americans who have been infected by the novel H1N1 influenza. Based on the most recent reports, the CDC estimates that about 47 million people were infected with 2009 H1N1 between April and Nov. 14, 2009, and about 213,000 were hospitalized. Nearly 10,000 people have died from the disease, more than 80% of them under the age of 64.
These numbers are include the period from mid-October to mid-November when the rate of infection was highest. The number of H1N1 cases has decreased over the past two weeks.
The CDC issues weekly reports on the spread of flu, hospitalizations for flu, and mortality rates. As of Aug. 30, 2009, the CDC began classifying all influenza-like illnesses (ILI) and pneumonias associated with ILI in the total count for H1N1. Confirmation of H1N1 is done for select cases for the purpose of tracking the predominant circulating virus.
Both local and state health departments are tracking the spread of influenza cases.
The City of New York has a website with detailed information on vaccination programs in the public schools, where vaccination clinics are being held, and surveillance data on the spread of flu-related illness in the five boroughs.
The New York State Department of Health monitors the number of flu cases in the state and provides a county-by-county list of vaccination clinics.