Measles outbreak associated with an imported case in an infant--Alabama, 2002.

Local transmission of measles is rare in the United States. Since 1997, the majority of measles outbreaks have been caused by imported cases. During October 19-November 15, 2002, an outbreak of 13 confirmed cases of measles occurred, with exposure in Alabama; 11 cases were among day care attendees who had not yet been vaccinated for measles. This was the largest outbreak of measles in the United States since 1999. In response to this outbreak, the Alabama Department of Public Health (ADPH) and CDC conducted an epidemiologic investigation that determined the outbreak was initiated by an imported case in an infant aged 9 months who had returned recently from the Philippines. Health-care providers should continue to include measles in differential diagnoses for febrile rash illnesses in infants, particularly those with recent travel to areas where measles is endemic.