Effects of Vaccine Program against Pandemic Influenza A(H1N1) Virus, United States, 2009โ2010
Effects of Vaccine Program against Pandemic Influenza A(H1N1) Virus, United States, 2009โ2010
In April 2009, the United States began a response to the emergence of a pandemic influenza virus strain: A(H1N1)pdm09. Vaccination began in October 2009. By using US surveillance data (April 12, 2009-April 10, 2010) and vaccine coverage estimates (October 3, 2009-April 18, 2010), we estimated that the A(H1N1)pdm09 virus vaccination โฆ