This photograph was captured in November, 2014, and depicts entomologists examining samples of water harvested from stagnant pools during an outbreak investigation of Dengue fever in Alhudaidah, Yemen, checking for the presence of Aedes spp. mosquito larvae, which upon becoming adults, are responsible for transmitting the dengue fever virus. The Dengue fever investigation was conducted by Yemeni Field Epidemiology Training Program (FETP) residents.
Dengue virus is a leading cause of illness and death in the tropics and subtropics. As many as 400 million people are infected yearly. There are not yet any vaccines to prevent infection with Dengue virus and the most effective protective measures are those that avoid mosquito bites. When infected, early recognition and prompt supportive treatment can substantially lower the risk of medical complications and death.
The FETP trains workers on the ground to help countries build sustainable capacity for detecting and responding to health threats. The program develops in-country expertise so that disease outbreaks can be detected locally and prevented from spreading.
For more on the FETP, and the Dengue virus, see the links below.