OMAHA, Neb. (AP) — One of the five American aid workers being monitored in Nebraska for exposure to Ebola has been hospitalized after developing a heart problem while jogging.

The Nebraska Medical Center this individual was jogging near the Omaha hospital Saturday when the cardiac issue developed, and a health care worked delivered aid.

The individual was in stable condition at the hospital Sunday.

Dr. Phil Smith, who oversees the hospital’s biocontainment unit, said this individual tested negative for Ebola again Saturday.

Smith says this case doesn’t present any risk to the health of people treating the individual or the public.

The five were exposed to Ebola in Sierra Leone when one of their colleagues became ill with the deadly virus. They were all doing well and nearing the end of the monitoring period.