An experimental malaria vaccine offers partial protection against Plasmodium falciparum infection, according to a report by investigators from Gambia, the United Kingdom, the United States, and Belgium (Lancet. 2001;358:1927-1934).
In the randomized trial, which took place in Gambia at the beginning of the malaria season, 250 men received three doses of the malaria vaccine or a control inoculation with rabies vaccine. Over the next 15 weeks, men who received the rabies vaccine became infected more quickly than those who received the malaria vaccine.
Stephenson J. Malaria Vaccine Studies. JAMA. 2002;287(2):180. doi:10.1001/jama.287.2.180-JWM10014-3-1