Two boys die from deadly drowning in Orlando - area lakes this summer . Bathers warned to stay out of water warmer than 80 degrees F . Officials : Fever - like symptoms after swimming in a lake may cause alarm .
3 boys die from deadly amoeba in Orlando-area lakes this summer . Bathers warned to stay out of water warmer than 80 degrees Fahrenheit . Officials : Flu-like symptoms after swimming in a lake should spark alarm .