Influenza A(H1N1) - update 6
2009
The situation continues to evolve rapidly. As of 17:00 GMT, 30 April 2009, 11 countries have officially reported 257 cases of influenza A (H1N1) infection.
Alerts & Prevention

The situation continues to evolve rapidly. As of 17:00 GMT, 30 April 2009, 11 countries have officially reported 257 cases of influenza A (H1N1) infection.
Human infections with a swine-origin influenza A (H1N1) virus that is transmissible among humans were first identified in April 2009 with cases in the United States and Mexico. The epidemiology and clinical presentations of these infections are currently under investigation. There are insufficient data available at this point to determine who is at higher risk for complications of swine-origin influenza A (H1N1) virus infection. However, adults and adolescents with HIV infection, especially persons with low CD4 cell counts, are known to be at higher risk for viral and bacterial lower respiratory tract infections and for recurrent pneumonias.
CDC Briefing on Public Health Investigation of Human Cases of Swine Influenza April 30, 2009, 11:30 a.m. EST Source: cdc.gov
This document provides interim guidance for state and local health departments conducting investigations of human cases of swine-origin influenza A (H1N1) virus (S-OIV). The following case definitions are for the purpose of investigations of suspected, probable, and confirmed cases of S-OIV infection.
As of 11 AM, April 30, CDC has confirmed 91 confirmed cases in 10 states. The outbreak of disease in people caused by a new influenza virus of swine origin continues to grow in the United States and internationally. Source: cdc.gov
CDC reports additional confirmed human infections, hospitalizations and the nation’s first fatality from this outbreak. Recent illnesses and the reported death suggest that a pattern of more severe illness associated with this virus may be emerging in the U.S.
CDC reports additional confirmed human infections, hospitalizations and the nation’s first fatality from this outbreak. Recent illnesses and the reported death suggest that a pattern of more severe illness associated with this virus may be emerging in the U.S.