There’s a concerning trend emerging in Canada and the United States when it comes to vaccine hesitancy.

In the United States, a key legal adviser to Robert F. Kennedy Jr., the man tapped to be the next U.S. health secretary, is working to get rid of polio and hepatitis B vaccines in America, according to the New York Times. Kennedy himself has vocally opposed vaccines for years.

And here in Canada the overall childhood vaccination rate is declining, said Dr. Jason Wong, chief medical officer at the BC Centre for Disease Control. Wong is the deputy provincial health officer and a clinical associate professor in the University of British Columbia school of population and public health.