Lahey Health is now part of Beth Israel Lahey Health

Microscope in the Laboratory, modern close-up shot

Eastern Equine Encephalitis

Eastern equine encephalitis, or EEE, is a mosquito-borne infection that is often fatal. EEE is rare, with most cases occurring in Massachusetts, New York, North Carolina and Florida.

Senior couple are hiking through the Lake District together with their pet dog.

West Nile Virus

West Nile virus causes a mosquito-borne infection that is usually mild and goes away on its own. About one out of 150 people with this infection develop a serious illness that can be life-threatening.

Grandparents Reading Book With Baby Granddaughter At Home

Pertussis (Whooping Cough)

Pertussis, also called whooping cough, is a highly contagious bacterial infection. The DTaP vaccination can help prevent pertussis or lessen the episodes of violent coughing that are the hallmark of this disease.

A smiling older couple having breakfast

Your Guide to Taking Insulin

If you use insulin for diabetes, it’s important to do so safely and correctly. This guide provides clear, step-by-step instructions and information about how to respond to problems that can arise.