The New York City Department of Health is warning parents about a chicken pox outbreak after more than six dozen children have been infected in Brooklyn.
Health officials said so far, 75 people have been infected since March in an Orthodox Jewish community in Williamsburg. The median age of patients is 3 years old.
Of those who have contracted the virus, health officials said 72 percent had not been vaccinated and 14 percent had not had the recommended number of doses of the vaccine.
Health officials warn the virus is extremely contagious, so they are urging people to make sure they are vaccinated.
Patients with the chicken pox are contagious two days before they even develop a rash and those who have not been vaccinated can get sick as many as three weeks after they are exposed.
Those at greatest risk from serious complications are infants, pregnant women and people with autoimmune diseases or compromised immune systems.