Researchers in Indonesia have found a way to fight disease-carrying mosquitoes by breeding an insect that carries bacteria that block viruses like dengue.
After 20 weeks of testing, the number of midges in these areas has decreased by more than 80%.
These seemingly useless animals are helping scientists in new research projects.
It is unclear how this virus can get the spider's DNA (and some other animals), but scientists think the virus does so to make it easier to infect. .
Wolbachia used to fight dengue fever has been proven by Brazil's scientific community to prevent mosquitoes from spreading the Zika virus.