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  • Title: Emergence of chikungunya virus infection in Orissa, India.
    Author: Dwibedi B, Mohapatra N, Beuria MK, Kerketta AS, Sabat J, Kar SK, Rao EV, Hazra RK, Parida SK, Marai N.
    Journal: Vector Borne Zoonotic Dis; 2010 May; 10(4):347-54. PubMed ID: 19874187.
    Abstract:
    From September through October 2006, an unknown disease characterized by acute onset of fever, joint pain with or without swelling, and maculopapular rash along with fatigue was reported from three villages of Cuttack and one village of Kendrapara district of Orissa, India, by the State Health Department. Upon learning this, a team from Regional Medical Research Centre (Indian Council of Medical Research), Bhubaneswar, Orissa, conducted an epidemiological investigation in the area. Household survey was carried out and clinical examination of the symptomatic individuals (n = 1289: Kendrapara, 752; Cuttack, 537) undertaken. Based on the recorded chikungunya (CHIK) fever symptoms, a vector-borne viral disease was considered for provisional diagnosis. Blood samples were collected from 217 symptomatic individuals; to confirm the diagnosis, sera were tested for anti-CHIK antibody (immunoglobulin M), which revealed 63% (64/101) and 40% (47/116) seropositivity in the samples from Kendrapara and Cuttack district, respectively. The illness was managed with analgesics like paracetamol. No death was recorded due to the illness. Entomological survey in the areas revealed the presence of Aedes mosquitoes: aegypti, albopictus, and vittatus. The per-man-hour density of Aedes vectors ranged from 0.8 to 7.6. High larval indices, house index >17% and Breteau index >70%, also indicated Aedes breeding in the area. The investigation documented circulation of CHIK in Orissa, India, and helped to take preventive steps in the outbreak area, with the suggested vector control measures.
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