Let's not forget the huge success of PrEP (Pre-exposure prophylaxis, or treatment-as-prevention). But a vaccine, especially if it is affordable and works for a

Let's not forget the huge success of PrEP (Pre-exposure prophylaxis, or treatment-as-prevention). But a vaccine, especially if it is affordable and works for a long time will go even further in ending this pandemic that has gone one for 40+ years.