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Chikunguya and Dengue Virus Transmission in India (Tamil Nadu)

22 July 2015

A household-based seroprevalence survey has been carried out among 1010 participants from 50 randomly selected locations in Chennai, Tamil Nadu State.

The study investigated the extent of transmission of dengue and chikungunya virus infections in South India. The study found that, although just 1% of participants reported history of dengue and 20% of chikungunya, 93% were seropositive to dengue virus, and 44% to chikungunya. The authors estimated that 23% of the susceptible population gets infected by dengue each year, corresponding to approximately 228 000 infections.

The study showed that the intensitiy of transmission in this part of India is significantly higher than that estimated in known hyperendemic settings in Southeast Asia and the Americas.

Citation:

Rodríguez-Barraquer I, Solomon SS, Kuganantham P, Srikrishnan AK, Vasudevan CK, Iqbal SH, et al. (2015) The Hidden Burden of Dengue and Chikungunya in Chennai, India. PLoS Negl Trop Dis 9(7): e0003906. doi:10.1371/journal.pntd.0003906