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Chikungunya, a mosquito-borne disease, is caused by chikungunya virus (CHIKV), an alphavirus belonging to the Togaviridae family. After a gap of about 32 years, the infection re-emerged in India in 2005. In 2005-2006, the years of emergence, several areas in southern India were affected by a chikungunya outbreak. However, in 2006, chikungunya cases were reported for the first time from northern India, where 52 cases were detected from the Delhi region [http://www.nvbdcp.gov.in]. These cases probably originated from elsewhere as local transmission of CHIKV had not yet been established in Delhi. It is noteworthy that the area has high potential for CHIKV transmission as the two known vectors, Aedes aegypti and Aedes albopictus, are prevalent in Delhi. From the surrounding areas of Delhi (i.e., Sonipat, Gurgaon, Faridabad and Noida), people in large numbers come to Delhi for work every day and therefore constitute an important epidemiological sector for the disease. Such a large-scale population movement between cities masks the importance of the source and the origin of infections such as chikungunya and dengue, which is vital in planning control strategies.

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2010-05-07   |   717 visitas   |   Evalua este artículo 0 valoraciones

Vol. 4 Núm.4. Abril 2010 Pags. 262-263. J Infect Developing Countries 2010; 4(4)