DAKAR, Senegal—A man in western Congo died Thursday with hemorrhagic fever symptoms, leading officials to suspect that a still-unidentified virus may be involved alongside malaria in a mysterious outbreak that has killed dozens of people, health authorities said.
Congo authorities said last week that they suspected malaria in the flu-like disease outbreak, which has killed at least 37 people and in which more than four out of five patients have tested positive for malaria.
