Malaria Transmission in Humans and Mosquitoes at the Area of Sabou, Burkina Faso

Background: Malaria is a disease that affects many people in Burkina Faso. It is caused by germs that are spread by mosquito bites. A vaccine that blocks the spread of malaria is important to get rid of the disease. To see if a vaccine works, researchers need to find out how many malaria infections are happening in the community. Objective: To learn how often people of all ages who live in Sabou, Burkina Faso, get malaria. Eligibility: Healthy people ages 6 months to 65 years who reside in Sabou in a household with adults and children. Design: Participants will be screened with questions about their health. They will have a physical exam. Participants will be asked about any malaria symptoms they are having. They will be asked about the use of bed nets. Their vital signs, like blood pressure and temperature, will be measured. They will have blood taken from their arm with a needle. Participants who have a fever will have a malaria test. Those who test positive for malaria will be referred to the local health facility for treatment. Participants will have monthly study visits. Blood will be taken from a finger. Participants may be invited to take part in 2 mosquito feeding experiments. Mosquitos that do not carry malaria will bite their arm. And a small amount of blood will be fed to mosquitos in a laboratory. Participants' homes will be examined for mosquitoes. Researchers will remove all mosquitoes they collect. Participants' homes will be sprayed with a chemical to kill mosquitoes and other insects. Participation will last for 12 months.