Arboviral disease - United States, 1991
Article Abstract:
A new mosquito vector (Aedes albopictus) may have been found for human arboviral encephalitis. Human arboviral encephalitis is inflammation of the brain that is caused by an arbovirus, a type of virus that is transmitted to humans by an insect vector. Among the 128 cases of human arboviral encephalitis that were reported in the US during 1991, 69 were part of two outbreaks of St. Louis encephalitis (SLE) that occurred in Arkansas and Texas. Thirty-eight patients developed LaCrosse encephalitis (LAC) during 1991. An outbreak of Eastern equine encephalitis (EEE) occurred in 1991 among horses in the southeastern and midwestern states. Five humans developed EEE, and one developed western equine encephalitis (WEE). EEE may have been transmitted to humans by a new mosquito vector for arboviral encephalitis. This mosquito vector may also be responsible for the outbreaks of SLE that occurred in 1991.
Publication Name: JAMA, The Journal of the American Medical Association
Subject: Health
ISSN: 0098-7484
Year: 1992
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Arboviral surveillance - Florida, 1990
Article Abstract:
In the summer of 1990, the transmission of St. Louis encephalitis (SLE, a brain inflammation) and eastern equine encephalitis to humans by mosquitoes and birds was judged to have epidemic potential in several states. Surveillance programs were initiated by the Florida Department of Health and Rehabilitative Services after signs of infection appeared in chickens. In central Florida, 18 cases of SLE in humans have been confirmed since September 7, 1990. Public warnings were issued, and killing of larvae and adult mosquitoes has taken place. SLE transmission in Florida is usually greatest in early October. In addition, the most common mosquito vector (carrying SLE) shifts its feeding from birds to mammals in the fall. (Consumer Summary produced by Reliance Medical Information, Inc.)
Publication Name: JAMA, The Journal of the American Medical Association
Subject: Health
ISSN: 0098-7484
Year: 1990
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Arboviral disease - United States, 1994
Article Abstract:
California (CAL) serogroup encephalitis is the most commonly reported human arbovirus infection in the U.S. Arboviruses are transmitted to man by mosquitos and ticks. In 1994, 76 human CAL serogroup encephalitis cases were reported, mostly from the Midwest. Seventy-five percent of the cases occurred in males, and onset of illness occurred between the months of May and October. Other types of encephalitis reported in 1994 included St. Louis encephalitis (SLE), western equine encephalitis, eastern equine encephalitis, and Powassan encephalitis. There were 20 cases of SLE reported from five states, of which three cases were fatal. A large number of encephalitis cases also were reported among animals, including horses, ducks, piglets, and puppies.
Publication Name: JAMA, The Journal of the American Medical Association
Subject: Health
ISSN: 0098-7484
Year: 1995
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