Categories #canadalist #canadalisting #canadanews #canadapost #canadastories #canadastory #canadatalk #topstories Search Canada Online Listing What can we learn from a 1-day measles vaccination blitz in 1967 Ontario? Post author By Search Canada Online Listing Blog Post date December 2, 2021 A letter addressed to a London, Ont., mother in 1967 is providing new insight into how a measles vaccination campaign rolled out more than five decades ago in the southwestern Ontario city. Share this:FacebookX Related ← Canadian Olympic men’s hockey power rankings: Mitch Marner in, Mathew Barzal out → $2.6M road project abandoned to protect frog, now Quebec advocates want damage undone