Summer means more time outdoors, and that brings increased exposure to ticks, mosquitoes and some infectious diseases. But experts say there are ways you can protect yourself. Robert Bettiker, an associate professor at Temple's School of Medicine, says that one disease on the rise in community settings is MRSA, an antibiotic-resistant staph infection that causes painful, red boils on the skin. "When I hear someone say they have a spider bite, I think MRSA."