. >> abc 7 news reporter elizabeth herr has an update. >> reporter: new officials, officials in wester county, new york, confirming measles in eight children. >> this is science prevailing over political science. >> reporter: the children appear to have been exposed to the virus in neighboring communities including new york city, where the mayor has just declared a public health emergency. >> we have a situation now where children are in danger. we have to take this seriously. >> reporter: the city now mandating vaccines and issuing fines of up to $1,000 to anyone who does not comply. the massive measles outbreak is alarming health officials across the country. in washington state, they are handing out free vaccines. in michigan, some schools are telling unvaccinated students to stay home. while in california, the san francisco department of health is urging the public to be proactive. >> the measles virus is airbo e airborne. so it can stay in the air for up to an hour after somebody who was contagious with measles was in that space. >> reporter: back in new york city, most cases ar