And So It Begins: Information Gathering & Dissemination

On April 24, 2009, the World Health Organization announced that multiple cases of an influenza-like illness had been diagnosed in the United States and Mexico.

Two days later, more cases had been identified, and WHO and the Global Outbreak Alert and Response Network (GOARN) sent experts to Mexico to work with health authorities. On Saturday, 25 April, upon the advice of the Emergency Committee called under the rules of the International Health Regulations, the Director-General declared this event a Public Health Emergency of International Concern.

The CDC releases a video informing the public of the symptoms of the H1N1 virus.

This video depicts how the H1N1 virus invades healthy cells and replicates.

Timeline of Influenza A(H1N1) cases: laboratory-confirmed cases and deaths as reported to WHO.

CNN creates an entire site devoted to articles and interactive features about H1N1.

A website featuring international news reports of the H1N1 flu pandemic.