The MMWR: August 28, 2009 / Vol. 58 / No. RR–10 includes:
2009 Pandemic Influenza A (H1N1) Virus Infections
Chicago, April–July 2009

On April 21, 2009, CDC reported the first cases of 2009 pandemic influenza A (H1N1) virus infection in the United States. On April 24, in response to those reports, the Chicago Department of Public Health established enhanced surveillance for 2009 pandemic influenza A (H1N1) virus infections. The first cases were identified on April 28. This report summarizes laboratory confirmed cases identified during April 24–July 25, and provides clinical and epidemiologic data for a subset of those cases

Use of Influenza A (H1N1) 2009 Monovalent Vaccine
Recommendations of the Advisory Committee on Immunization Practices (ACIP), 2009
This report provides recommendations by CDC’s Advisory Committee on Immunization Practices (ACIP) regarding the use of vaccine against infection with novel influenza A (H1N1) virus. Licensed vaccine is expected to be available by mid-October 2009. Highlights of these recommendations include 1) the identification of five general population target groups for initial focus of vaccination efforts (pregnant women, persons who live with or provide care for infants aged <6 months, health-care and emergency medical services personnel, children and young adults aged 6 months–24 years, and persons aged 25–64 years who have medical conditions that put them at higher risk for influenza-related complications), 2) establishment of a priority for a subset of persons within the initial target groups in the event that initial vaccine availability is unable to meet demand, and 3) guidance on use of vaccine in other adult population groups as vaccine availability increases.

http://www.cdc.gov/mmwr/