Cases of tularemia, also known as “rabbit fever," are on the rise in the U.S., according to a new report from the CDC. The report identifies symptoms and the groups most at risk.

The CDC said the mutations in that patient were similar to ones observed in a hospitalized patient in British Columbia, Canada. The changes may make it easier for the virus to bind to receptors in ...

But risks continue to emerge that the virus could evolve to more easily infect people. The CDC reported Thursday that a genetic analysis of samples from the patient in Louisiana recently ...

The CDC stressed there has been no known transmission of the virus from the Louisiana patient to anyone else. The agency said its findings about the mutations were “concerning,” but the risk ...

Zika virus struck the Americas hard, stoking fear ahead of the Rio Olympics for its outbreaks and associated birth defects. That led observers to wonder why the continent of Africa didn't have the ...

The mosquito-borne Zika virus is known for causing cerebral palsy and microcephaly, a severe congenital brain malformation that often leads to profound intellectual and developmental disabilities.

“The changes observed were likely generated by replication of this virus in the patient with advanced disease rather than primarily transmitted at the time of infection,” the CDC said.