A field test of custom-designed homes proves that when carbon dioxide can flow out, mosquitoes stay out too.
WHEN STEVE LINDSAY first traveled to Gambia in 1985, he met a man living in Tally Ya village whom he remembers as “the professor.” The professor knew how to keep the mosquitoes away.
That’s a big deal for people who live in this small West African country, which serves as the namesake for one of the most deadly bugs on the planet: Anopheles gambiae. “It’s probably the best vector of malaria in the world,” says Lindsay, a public health entomologist at Durham University in the United Kingdom. Malaria kills 384,000 people a year in Africa, 93 percent of whom are under 5 years old. The mosquito exploits human behavior by feeding at night when people are sleeping, transmitting the Plasmodium parasite that causes flu-like symptoms, organ failure, and death. “It’s adapted for getting inside houses and biting people,” says Lindsay.