Even the healthy can spread dengue
Dengue can even be transmitted from otherwise healthy humans who show no symptoms of the disease but carry the virus, a pilot study across the state has found. Until now, it was believed that only sick people could transmit the disease through the aedes mosquito....

http://timesofindia.indiatimes.com/city/chennai/Even-the-healthy-can-spread-dengue/articleshow/54142895.cms
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