On April 9th New York City declared a public health emergency, making vaccination against measles mandatory in the parts of Brooklyn where cases have been concentrated. Residents were given 48 hours to comply or pay a $1,000 fine. The authorities are also cracking down on child-care centres and yeshivas (religious schools) that have flouted a ban on attendance by unvaccinated children that the city issued in December. Nearly 40 cases of measles were traced to unvaccinated children in one such school that defied the ban. On April 15th the health department shut down a day-care centre for 250 children for non-compliance.
The outbreak in New York has charged an ongoing debate in America: whether to abolish the exemptions to vaccination for schoolchildren. New York and 46 other states currently allow unvaccinated children to attend school if their parents claim that they object to vaccines on religious grounds; a further 17 states have broader “philosophical” exemptions, too. In 2017-18 such non-medical exemptions were used for 2.2% of American schoolchildren, double the rate in 2010-11.
Paul Offit of the Vaccine Education Centre at the Children’s Hospital of Philadelphia says that the religious exemption to vaccines is, in fact, a “misinformed–parent exemption.” Vaccines were invented long after the main religious texts had been written and no widespread religious doctrine says people cannot be vaccinated, says Dr Offit. Proposals to abolish non-medical exemptions have been introduced in several state legislatures this lawmaking season. But such bills—as well as some that would make it easier to avoid vaccines—are a perennial feature in many states; some never get to a vote. By and large the trend in recent years has been to make non-medical exemptions harder to obtain (by asking parents for more paperwork or to renew the request every year, for example).
California bucked the trend and abolished non-medical exemptions in 2015 in response to a big measles outbreak. Vaccination rates went up, but so did the rate of medical exemptions. It turned out that some doctors were writing bogus ones—and parents would go to great lengths to find them. One child who came down with measles had received an exemption from all vaccines from a doctor’s practice in a town several hundred miles away.