How many doses is the COVID-19 vaccine?
Both the Moderna and Pfizer-BioNTech COVID-19 vaccines are 2 doses separated by 28 or 21 days respectively. You should not get your second dose earlier than recommended, however there is no maximum interval. You should get your second dose as close to the recommended interval as possible to be protected sooner. A series started with one product must be completed with the same product.