(AP) -- Health officials say a 5-year-old New York City boy who recently traveled to West Africa and had a fever does not have Ebola.

The boy returned from Guinea with his family Saturday and felt sick Sunday, so his parents called 911. Emergency responders in protective gear took him and his mother to Manhattan's Bellevue Hospital.

The boy developed a fever Monday. He tested negative for Ebola. Officials say they'll do further tests in an abundance of caution and he'll stay at the hospital until those test results come back. His mother is doing fine.

A doctor who also was in Guinea remains in serious but stable condition after testing positive for Ebola last week. He had been treating patients with the virus.

Four people have been diagnosed with Ebola in the U.S.