South Africa’s Department of Health has now reduced the amount of time needed from your 1st to second Pfizer dose. The minimum time between doses will drop from 42 days to 21. ) ) The department says that while you can now choose to have a different booster to what you were initially vaccinated with, it is still recommending you stick to the same shot. The main determining factor in your choice should be based on what vaccine is available at the time. Many medical professionals have long been calling for the opportunity to mix-and-match booster doses. The Pfizer and J&J vaccines are two differ…