This is the skin of a patient after 3 days of measles infection; treated at a New York hospital. (CDC/file)

NEW YORK (CBSNewYork) — The New York City Department of Health is warning residents about a measles outbreak after 16 confirmed cases in northern Manhattan and the Bronx.

The outbreaks happened in Inwood Hill Park, Washington Heights and Hudson Heights in Manhattan and in the Melrose and Mount Hope neighborhoods in the Bronx.