What can be used to drape over beds as a preventive measure against malaria?

Mosquito netting is effective in preventing malaria because it creates a physical barrier between individuals and mosquitoes, which are the primary vectors for the transmission of the malaria parasite. These nets are often treated with insecticides, providing an additional layer of protection by killing or repelling mosquitoes on contact. When used properly, they significantly reduce the chances of being bitten while sleeping, especially in areas where malaria is endemic.

Other options may not provide the same level of protection. Plastic sheets may block entry but do not have the same life-saving properties as treated nets. Heavy blankets might provide warmth but do not deter mosquitoes and could even trap them close to the individual. Bed curtains, while they can serve as a barrier, are often less effective because they might not fit snugly around the bed, leaving openings for mosquitoes. In contrast, mosquito netting is specifically designed for this purpose, making it the most suitable choice for malaria prevention.