Caused by a form of bacteria, Lyme disease is transmitted to humans through tick bites.
DEET
Debugging: How to avoid insect-borne diseases
The CDC reports that the number of Americans infected by insect-borne illnesses has more than tripled since 2004.
Going viral: Why are fast-spreading viruses becoming so common?
While mechanisms of viruses are complex, the reasons behind their spread aren’t.
The science of West Nile virus
Area West Nile deaths prompt extra precaution for those at high risk
