If confirmed, it would be the first case of locally acquired malaria in New Jersey since 1991. There are about 100 travel-related cases in the state each year, health officials said.

The mosquito species that carries malaria is present in the state, though local cases have been historically rare

Health officials in New Jersey are investigating a case of malaria, the potentially deadly mosquito-transmitted disease, in a Morris County resident with no international travel history. That means it is possible the infection happened locally,