Epidemic of dengue-4 virus in Yap State, Federated States of Micronesia, and implication of Aedes hensilli as an epidemic vector
| Autor: | D Rutstein, Duane J. Gubler, A Yolwa, C L Fritz, Harry M. Savage, Vance Vorndam |
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| Rok vydání: | 1998 |
| Předmět: |
Adult
Male Adolescent Rain Prevalence Immunoglobulins Enzyme-Linked Immunosorbent Assay Antibodies Viral Virus Disease Outbreaks Dengue fever Dengue Aedes Risk Factors Virology Aedes hensilli medicine Animals Humans Child biology Outbreak Dengue Virus Hemagglutination Inhibition Tests biology.organism_classification medicine.disease Insect Vectors Culex Infectious Diseases Child Preschool Vector (epidemiology) Housing Female Parasitology Viral disease Micronesia |
| Zdroj: | The American Journal of Tropical Medicine and Hygiene. 58:519-524 |
| ISSN: | 1476-1645 0002-9637 |
| DOI: | 10.4269/ajtmh.1998.58.519 |
| Popis: | A dengue fever/dengue hemorrhagic fever (DF/DHF) outbreak in Yap State caused by dengue-4 virus was confirmed serologically and by virus isolation from serum samples collected on each of three island groups. Most DF/DHF cases occurred during a three-month period between mid-May and early August 1995. Five fatal cases, three of which were in children between the ages of four and 11, occurred between June 20 and July 26. A serosurvey conducted in late August revealed anti-dengue IgM prevalence rates of 18% on Yap, 36% on Eauripik, and 6% on Woleai. The majority of residents (93-100%) on the three islands were positive for anti-dengue IgG antibodies, indicating widespread exposure to dengue viruses. The IgG titers indicative of secondary antibody response were noted on Eauripik (6.5%) and Woleai (17%), but were rare on Yap (0.7%). Entomologic investigations implicated the native mosquito species, Aedes hensilli, a member of the Scutellaris Group of Aedes (Stegomyia), as a previously unrecognized epidemic vector of dengue viruses. Aedes hensilli was the most abundant and widespread member of Ae. (Stegomyia) in Yap State, the only species of Ae. (Stegomyia) on Woleai, and the only mosquito species present on Eauripik. New distribution records for mosquito species are reported. |
| Databáze: | OpenAIRE |
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