Just like we're likely going to be stuck with COVID for the rest of our lives, we're probably also going to be stuck wondering which is the most effective vaccine to protect against it.Well lucky we've got science to help sort it out, with a new study putting the Moderna and Pfizer vaccines head-to-head across hundreds of thousands of people.And other scientists have been busy working out how much protection you have against reinfection, if you are infected in the first place.Also on today's show:* Quick Fire Friday* Tegan interrupts Quick Fire Friday with her own - excellent - Quick Fire Question.

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