Zika is a flavivirus related to dengue, West Nile, yellow fever and Japanese encephalitis. Infection with Zika virus is usually mild. About one in five people develop symptoms; but hospitalization is rare. If someone is going to have symptoms, they usually start between 2-7 days following the bite of an infected mosquito and commonly include: acute onset of fever, a red rash with small bumps, joint pain, or pink eye. Other symptoms may include headache, muscle pain, pain behind the eyes, and vomiting. If present, symptoms typically last several days to a week. A Zika virus hotline is available Monday – Friday, 9am – 6pm at (888) 364-4723. Learn More.