For the young & healthy, who have a high probability of overcoming COVID if infected, the benefit (efficacy) to risk (both short and long term) of the different vaccines should be carefully considered. Vaccine efficacy is also not evaluated in isolation from other factors. If the individual continues to observe physical distancing and good hygiene practices, the viral load on transmission would probably have some impact on whether the immune system is able to clear the virus before the aberrant responses are triggered. As such, a vaccine with a lower efficacy rate (for the overall population) but safer (or at least known) adverse reaction profile might be better for the young, who can always get the more experimental drug at a later date when more data has been collected.