| tracking epidemic chikungunya virus into the indian ocean from east africa. | the largest documented outbreak of chikungunya virus (chikv) disease occurred in the indian ocean islands and india during 2004-2007. the magnitude of this outbreak led to speculation that a new variant of the virus had emerged that was either more virulent or more easily transmitted by mosquito vectors. to study this assertion, it is important to know the origin of the virus and how the particular strain circulating during the outbreak is related to other known strains. this study genetically c ... | 2008 | 18931072 |
| drought-associated chikungunya emergence along coastal east africa. | epidemics of chikungunya fever, an aedes spp.-borne viral disease, affected hundreds of thousands of people in western indian ocean islands and india during 2005-2006. the initial outbreaks occurred in coastal kenya (lamu, then mombasa) in 2004. we investigated eco-climatic conditions associated with chikungunya fever emergence along coastal kenya using epidemiologic investigations and satellite data. unusually dry, warm conditions preceded the outbreaks, including the driest since 1998 for some ... | 2007 | 17360859 |
| persistence of tanapox in tana river valley. | sera collected from inhabitants of the tana river valley in 1971 were examined for antibody to tanapox virus. neutralizing antibody was present in 16.3%. the levels of antibody and its presence in two children under the age of 10 years indicated that infection had been occurring in the area since the reported outbreak in 1962. a comparison of the incidence and distribution of antibodies in the same sera to west nile virus revealed marked similarities suggesting that tanapox, like west nile virus ... | 1973 | 4349335 |