Is it safe to mix and match COVID-19 vaccines?
by Priya Joi As the COVID-19 vaccine rollout is well underway, some countries are starting to think about mixing vaccine products, where one vaccine is given as the first shot and a second vaccine of a different type and different manufacturer is given several weeks later. Mixing vaccine products could be a good idea for many reasons. Supply bottlenecks have led to shortages in several countries, so being able to mix vaccines from different manufacturers may reduce the pressure on vaccine supply. Moreover, it there is some preliminary evidence to suggest that it could also potentially lead to a stronger immune response compared to two doses of the same vaccine. Some countries are planning...

