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Influenza Outbreak -- Louisiana

The first outbreak of influenza confirmed by virus isolation in the contiguous states for the 1983-1984 season occurred in a home for retarded children in Louisiana. Of 44 children at the home, 33 (75%) experienced a febrile illness (temperature 38.3 C (101 F) or greater) between January 2 and January 4, 1984. Four cases among young adult staff and a volunteer worker occurred at the same time, and six additional cases, three in children and three in adults, were reported from January 5 to January 7. Two type A(H1N1) influenza viruses have been isolated from specimens collected on January 5 from ill children. CDC has received preliminary reports of other possible outbreaks of influenza, mainly among college students and schoolchildren from areas in the South Atlantic and South Central regions, which are under investigation.

Three additional states have reported their first influenza virus isolations for the current season. In Denver, Colorado, two isolates of type A(H1N1) virus were obtained from children; in Nashville, Tennessee, two isolates of type A(H3N2) virus were obtained from young siblings; and in Oregon, a type B virus was obtained from a 35-year-old man. Reported by RL Guy, MD, New Orleans, J McMichael, ET Wood, S Guey, DDS, Commissioner, Plaquemines Parish Health Dept, R Gohd, PhD, Charity Hospital, New Orleans, K Kelso, L McFarland, DrPH, CT Caraway, DVM, State Epidemiologist, Louisiana State Dept of Health; G Meiklejohn, MD, University of Colorado Medical Center, Denver; P Wright, MD, Vanderbilt University, Nashville, Tennessee; B Matsuda, MPH, Oregon Public Health Laboratory; State Epidemiologists and Laboratory Directors; Div of Field Svcs, Epidemiology Program Office, Influenza Br, Div of Viral Diseases, Center for Infectious Diseases, CDC.

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