In a follow-up on the measles outbreak affecting several neighborhoods in Brooklyn and Queens, New York City health officials report an additional 33 confirmed cases during the past week.

Image/NYSDOH

This brings the outbreak total to 423 cases, with the neighborhoods of Williamsburg (348) and Borough Park (61) reporting the bulk of the outbreak.

Most of these cases have involved members of the Orthodox Jewish community.

NYC measles outbreak: 92 percent of children diagnosed were unvaccinated

Health officials remind the public that vaccination is the best way to prevent measles. Anyone who has received two doses of a measles-containing vaccine is considered immune and highly unlikely to get measles.