With new cases of measles being reported in Ontario and elsewhere in Canada, there’s as warning that adults vaccinated against measles decades ago aren’t as protected as might be expected. Doctor, Brian Lichty is associate professor in the division of molecular medicine at McMaster University in Hamilton. He says the situation is reaching the point where we’re going to start seeing deaths. Lichty says the vat majority of measles cases have occurred in the un-vaccinated or under-vaccinated; meaning children who received only one dose of vaccine instead of the recommended two shots. But some people with a documented history of vaccinations are becoming infected. The Public Health Agency of Canada recommends one dose of the measles for adults born in 1970 or later, except for those at greatest risk of exposure. They include travelers to regions where measles is prevalent, health care employees and military personnel. The agency says a single dose of the measles or MMR Vaccine is estimated to be 85-to-95 per cent effective. With a second dose, it’s almost 100 per cent effective. Measles is one of the most contagious diseases known to medicine, spreading easily through contact with an infected person. Complications include pneumonia and infections of the brain.