Volume 14, Number 10—October 2008
Dispatch
Chikungunya Outbreak, South India, 2006
Prabhdeep Kaur, Manickam Ponniah, Manoj V. Murhekar, Vidya Ramachandran, Ramakrishnan Ramachandran, Hari Kishan Raju, Vanamail Perumal, Akhilesh C. Mishra, and Mohan D. Gupte
Table
Characteristics of chikungunya outbreak in South India, 2005–2006*
| Area | Mallela, Andhra Pradesh | Gowripet, Avadi, Tamil Nadu |
|---|---|---|
| Setting | Rural | Urban |
| Population |
1,965 |
2,649 |
| Attack rate | ||
| Overall | 12% (n = 242) | 23% (n = 575) |
| Age, y | 5.8% | |
| 0–4 | 2.4% | 20% |
| 5–14 | 3.6% | 24% |
| 15–44 | 12.9% | 22.8% |
| >45 | 22.2% | |
| Gender | 18.9% | |
| M | 9.9% | |
| F |
14.8% |
24.5% |
| Chikungunya-specific IgM positivity |
67% (90/134) |
56% (5/9) |
| Subclinical infection | ||
| No. tested | 100 in all age groups | ND |
| Age-specific prevalence of IgM antibodies | ||
| 5–14 y | 4% | ND |
| 15–44 y | 8% | ND |
| >45 y | 3% | ND |
*Ig, immunoglobulin; ND, not done.
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