why do 33% of people who contract a certain virus never survive a silent killer is lurking in Plymouth Massachusetts an 80-year-old man in Worcester County contracted the mosquito born virus the rare and deadly Eastern equin and sephtis virus has prompted a partial nighttime curfew starting this week this mosquito born virus has a staggering fatality rate of about 33% survivors of often face lifelong neurological issues residents in several towns are urged to limit outdoor activities after 6 p.m. per and everyone is advised to use mosquito repellent and eliminate standing water around their homes with no known cure or vaccine this outbreak is a stark reminder of the dangers posed by mosquito born illnesses stay aware stay safe and heed The Advisory doubts