A symposium on tick-borne illnesses will take place April 21 at the Westport Library.

The gathering, from 6:30 to 8:30 p.m., is sponsored by the Westport/Weston Health District, the Lyme Disease Alliance, the Tick-borne Disease Alliance and the library. The free program will take place in the library's McManus Room.

Speakers will include Dr. Kirby Stafford III, chief entomologist at the Connecticut Agricultural Experiment Station, and author of the Tick Management Handbook. His recent research focuses on natural, biological and integrated management methods for tick control of the black-legged or deer tick, the tick most well known as the carrier of Lyme disease, but which can carry four other pathogens that cause human disease, according to publicity for the event.

John Donnally, program director of the Tick-borne Disease Alliance, will discuss his personal experience with Lyme disease, as well as his recovery and advocacy, including the "Bite Back for a Cure" campaign.

For more information, call Monica Wheeler at the health district at 203-227-9571, ext. 242, or visit www.wwhd.org.