Chikungunya virus outbreak in Kerala, India, 2007: a seroprevalence study
Mem. Inst. Oswaldo Cruz
;
106(8): 912-916, Dec. 2011. graf, tab
Article
Dans Anglais
| LILACS
| ID: lil-610963
ABSTRACT
India was affected by a major outbreak of chikungunya fever caused by Chikungunya virus (CHIKV) during 2006-2007. Kerala was the worst affected state during 2007 with a contribution of 55.8 percent suspected cases in the country. However, except for clinically reported case records, no systematic information is available on infection status of CHIKV in the region. Hence, we carried out a post-epidemic survey to estimate seroprevalence status [immunoglobulin G (IgG)] in the community using commercially available indirect immunofluorescence test. This methodology had been reported to be highly specific and sensitive for CHIKV infection. The study area selected was the worst affected mid-highlands region of Kerala which harbour vast area of rubber plantations. The study evidenced 68 percent of the population to be seropositive for CHIKV IgG. Males were found more affected than females (χ2 = 9.86; p = 0.002). Among males, prevalence was significantly higher in the age classes 21-30 (χ2 = 5.46; p = 0.019) and 31-40 (χ2 = 5.84; p = 0.016) years. This may be due to high occupational risk of the male population engaged in plantation activities exposed to infective bites of Aedes albopictus. The current study provides an insight into the magnitude of CHIKV outbreak in Kerala.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Immunoglobuline G
/
Virus du chikungunya
/
Épidémies de maladies
/
Infections à alphavirus
/
Anticorps antiviraux
Type d'étude:
Etude diagnostique
/
Étude observationnelle
/
Étude de prévalence
/
Facteurs de risque
Limites du sujet:
Adulte
/
Femelle
/
Humains
/
Mâle
Pays comme sujet:
Asie
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
2011
Type:
Article
Pays d'affiliation:
Inde
Institution/Pays d'affiliation:
Rubber Research Institute of India/IN
/
Vector Control Research Centre Field Station/IN
/
Vector Control Research Centre/IN
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