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Resumo: Chikungunya virus (CHIKV) is an alphavirus transmitted to humans through the bite of infected Aedes mosquitoes. CHIKV causes fever - usually is not fatal, but can cause debilitating joint pains or, in rare instances, severe illness. The East/Central/South African strain of chikungunya has been emerging in Asia since 2006, first in the Indian subcontinent, then Thail-. This report describes the characteristics of a local outbreak linked with chikungunya reemergence in a rural Asian setting. Sporadic cases of chikungunya were identified in Cambodia in 2011. Antibodies to CHIKV have been detected in serum collected in Cambodia in 2007, but the strain could not be identified for those cases (U.S. Naval Medical Research Unit 2, unpublished data, 2012). On March 7, 2012, several cases of rash with fever were reported among village residents of Trapeang Roka in Kampong Speu Province, Cambodia. Subsequent field investigation revealed that four of six blood samples from affected persons were positive for CHIKV by polymerase chain reaction (PCR) at U.S. Naval Medical Research Unit 2 in Phnom Penh. Investigators from the Cambodian Communicable Disease Control Department, National Malaria Center, Institut Pasteur du Cambodge (IPC), local health centers, - village authorities conducted a seroprevalence study of village residents on March 26 to gather information for response planning - control efforts. The outbreak affected families throughout the village, - 44.7% of the population tested had evidence of infection by CHIKV, which affected all age groups. Public health agencies - policymakers in affected - nearby unaffected areas of Asia - elsewhere should be alert to the potential spread - reemergence of CHIKV.

Imprenta: MMWR. Morbidity and Mortality Weekly Report, v. 61, p. 37-40, 2012

Descritores: Chikungunya virus - Pathogenesis ; Chikungunya virus - Antibodies ; Chikungunya virus - Viral infections ; Chikungunya Virus - Virus ; Chikungunya virus - Chikungunya fever ; Chikungunya virus - Epidemiology ; Chikungunya virus - Public health

Data de publicação: 2012

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