Staggering number of measles cases in US just part of 300% global uptick

The measles outbreak that continues to spread across the U.S. is just one of many that are going on around the world this year.
1:30 | 04/16/19

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Transcript for Staggering number of measles cases in US just part of 300% global uptick
It's the most infectious virus in the world about 90% of people who were exposed to it they have not been vaccinated will become infected and sick. It's the measles and we're seeing a surge of it health officials say 550. Bike cases have been confirmed this year. Yearly a hundred more than just a week ago. Two thirds of those cases from New York we have seen multiple hospitalizations including an infant and even a premature birth. Who was by measles. And infant. Rockland county authorities announcing today that anyone exposed to measles have stayed away from public events they will also be required to provide information about their health and who think big in contact with. Help stop the spread. Or they could face 2000 dollar fine this is not 29 week fighting to measles outbreak here in Rockland. The longest lasting current outbreak in Utah wired nation. And the largest outbreak in New York State in thirty years health experts warning people against vaccine Mets. It is incredibly safe and effective. About 97% affected after you get the two doses about 93%. After just a single dose. A rush to curb the outbreak before possibly takes life's neat we wait for someone to die it is grotesque. So what are the symptoms of measles lakers' three to five days a high fever runny nose and cop a rash begins to break out the best thing to do. He defeated doctor if that happens. Soaring shocked. Anything news New York.

This transcript has been automatically generated and may not be 100% accurate.

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