ORLANDO, Fla. -- Days after learning that a third child died of an amoeba waterborne illness, the Orange County Commission on Tuesday queried health officials about the safety of area lakes.

Commissioners asked officials with the State Department of Health, including Dr. Kevin Sherin, about public safety concerning lake activities.

"Are they found in all water bodies and they only cause problems at certain times?" Orange County Commissioner Teresa Jacobs asked.

Officials admitted they do not have all the answers.

"We don't really know all the factors that go on with this illness. Clearly we don't," Sherin said.

Amoeba can be present in any body of fresh water when the water temperature reaches 80 degrees. They live on the floor of lakes and ponds and can enter the body through the nose.

Nose guards can help prevent contracting amoeba but do not guarantee success, officials said.

"When in doubt, just don't go in the water. Forget nose plugs and face masks. Just don't go in the water," Orange County Mayor Rich Crotty said.

Angel Vasques, 14, died of amoebic meningitis in June, but the story came to light just last week.

Two others, Will Sellars, 11, and Richard Almeida, 10, died of amoebic encephalitis after spending time in area lakes.

When asked by Local 6 News last week if a Vasques' death was caused by an amoebic infection, Sherin said, "No, we don't have that information."

Two days later, officials with the Centers for Disease Control and Prevention confirmed to Local 6 News that Vasques died of amoebic meningitis.

Watch Local 6 News for more on this story.