Reply According to the Massachusetts Department of Public Health (DPH), mosquito bites in the state typically result in skin irritation and itching. However, serious viruses including West Nile Virus and Eastern Equine Encephalitis are also spread by them. (Shutterstock) ANDOVER, MA — As the warmer weather sets in, Andover's Director of Public Health Thomas Carbone is reminding residents of important safety tips to avoid mosquito and tick bites. According to the Massachusetts Department of Public Health (DPH), mosquito bites in the state typically result in skin irritation and itching. However, serious viruses including West Nile Virus and Eastern Equine Encephalitis (EEE) are also spread by mosquitos in rare instances.