| | Vertebrate (species and organ) and arthropod | No. isolations/No. tested | No. with antibody/No. tested Test used | Country and region |
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| Man The virus has been isolated five times from man near Belem, Brazil. The first isolation in Brazil was made by liver biopsy (6,7); the others were made from the blood of febrile laborers. HI antibodies are prevalent in human residents in the Amazon Region (6,7). | Mosquitoes Isolation from a pool of Anopheline mosquitoes collected in Bocas del Toro, Panama (8,9) and from two pools of Anopheles (Ker) neivai captured in Pacific Coast rain forest of Colombia (12), and from six pools of An neivai taken in 1962 and 1964 from Pacific lowlands of Colombia (13). | | Man | 6/119 | | Guaroa, Colombia;1956(5) | Man | | 74/110 | Colombia | Man | 1/76 | | Guaroa and area, Colombia 1958 | Man | | 27/69 | Colombia | Man | 0/18 | | Guaroa, Colombia;1959 | Man | | 16/18 | Colombia | Man | 0/37 | | Orinoco forest, Colombia; 1958 | Man | | 2/6 | Colombia | Man | | 1/210 | Upper Magdalena Valley, Colombia; 1958-59 | Man | | 6/60 | Mid Magdalena Valley, Colombia; 1956-57 | Man | | 95/190 | Mid Magdalena Valley, Colombia; 1957-60 | Man | | 13/27 | Gulf of Uraba, Colombia; 1960 | Man | | 18% of 1300(HI) | Brazil (16) |
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