Dr. Anthony Fauci, the former director of the National Institute of Allergy and Infectious Diseases, was hospitalized with a case of West Nile virus and is now recovering at home, a spokesperson said.

Fauci is expected to make a full recovery, the spokesperson told ABC News in a statement.

West Nile virus is the leading cause of mosquito-borne disease in the contiguous United States, according to the CDC.

This is a developing story. Check back for updates.