When a mosquito bites a person infected with a dengue virus, the virus enters the mosquito and when the infected mosquito bites another person, the virus enters that person's bloodstream.
Loko nsuna leyi yi lume munhu loyi a nga na vuvabyi bya Malaria, yi rhwala xitsongwa-tsongwani, ivi loko yi ya luma munhu un'wani, yi n'wu chela xitsongwa-tsongwani.