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Am. J. Trop. Med. Hyg., 25(1), 1976, pp. 186-190
Copyright © 1976 by The American Society of Tropical Medicine and Hygiene

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Hepatitis B Surface Antigen (Australia Antigen) in Mosquitoes Collected in Senegal, West Africa*

William Wills, Gerard Saimot, Christian Brochard, Baruch S. Blumberg, W. Thomas London, Rita Dechene{dagger} AND Irving Millman
Department of Environmental Resources, Bureau of Community and Environmental Control, Harrisburg, Pennsylvania, Chaire de Médecine et d'Épidémiologie Africaine (Prof. Payet), Hopital Claude-Bernard, Paris, France, and The Institute for Cancer Research, Fox Chase Cancer Center, Philadelphia, Pennsylvania 19111

During July and August of 1973, 9,198 mosquitoes were collected in the Republic of Senegal. Eight species of mosquitoes were found in the collections: Culex thalassius, Culex pipiens quinquefasciatus, Culex tigripes, Culex phillipi, Aedes irritans, Aedes aegypti, Anopheles gambiae, and Mansonia sp. Specimens were sorted by biological condition; those obviously engorged were designated as (E), females with swollen abdomens not conspicuously blooded were considered gravid (G), and those with normal or shrunken abdomens were considered neither blooded nor gravid (U). Representative samples of each species were tested by solid phase radioimmunoassay for hepatitis B surface antigen (HBsAg, Australia antigen). A total of 12 mosquitoes were found to be HBsAg positive out of 1,658 individuals tested. These were: 9 Culex thalassius, 1 (E), 5 (G), 3 (U); 2 Culex pipiens quinquefasciatus, 1 (E), 1 (U); and Aedes irritans, 1 (U).

Accepted for publication June 21, 1975.


* This work was supported by USPHS grants CA-06551, RR-05539, and CA-06927 from the National Institutes of Health, and by an appropriation from the Commonwealth of Pennsylvania.


{dagger} Present address: Louisiana State University School of Medicine, New Orleans, Louisiana 70112.




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B. Blumberg
Australia antigen and the biology of hepatitis B
Science, July 1, 1977; 197(4298): 17 - 25.
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Copyright © 1976 by the American Society of Tropical Medicine and Hygiene.