New Delhi, India’s capital of 16 million people, is ravaged every year by either dengue or chikungunya. This year, it’s the latter. Already, 3,251 cases have been reported compared to last year’s 64. Estimates are likely conservative because poorer citizens tend not to seek…

Florida researchers studying Haiti’s chikungynya outbreak identified a mosquito-borne virus called Mayaro in that Caribbean country, where it had never been observed before.   The strain is different from those previously seen in the Amazon, where most cases of Mayaro have…

Chikungunya, a mosquito-borne virus similar to dengue fever, is running rampant in India. More than 12,250 cases had been reported across the country by the end of August. The Karkardooma neighborhood of Delhi has borne a particularly heavy burden, with about 1/3 of the…

Viruses such as dengue or Zika benefit from the inflammation caused by mosquito saliva, a new study in Immunity shows. By injecting mice with a relative of chikungunya, researchers found that inflammation boosts virus replication and spread. The inflammation causes…

Today, August 20, is World Mosquito Day, marking the day in 1897 when a British Medical Officer in India, Ronald Ross, changed the course of history with the discovery of the malaria parasite in the “dapple-winged” mosquito, later identified as Anopheles. Our understanding…

Despite the rising cases of dengue and chikungunya in South India, few epidemiological studies documented the extent of transmission—a gap a household-based seroprevalence survey in Chennai sought to correct. The team found that 93% of participants had been exposed to…

Colombia reports 175,000 cases of chikungunya. How has the epidemic affected the country? The City Paper in Bogota, Colombia lists the ways: