#My first dose was Pfizer. Why am I being offered Moderna for the second?
“#My first dose was Pfizer. Why am I being offered Moderna for the second?” Experts say the two mRNA vaccines are interchangeable as millions of doses of both Pfizer and Moderna arrive in Canada Vaccine records are tumbling almost daily. On June 18, 532,000 shots were put into arms in Canada, according to data collected…