The first Covid-19 vaccine may not be the magic bullet that returns life to 'normal'

The 'first' vaccine, or even the first generation of vaccines, will most likely not be perfect; we need to be pragmatic and transparent on that front. The reality is that with these vaccines, we will be taking small steps to return to a sense of normality. Plenty is attached to the word vaccine. When we hear it, we think of one of the greatest advances in human health, one that eliminates smallpox and saves millions every year from polio and tetanus, from HPV and the flu. However, the first generation of Covid-19 vaccines will probably be only partially effective. They might not be completely effective in all ages or appropriate in all health systems. It is very possible that they might provide immunity only for a limited period, even as short as 12 to 18 months. This might not be what we are used to from a vaccine, but there is no doubt that the first effective vaccines, even imperfect ones, can have a major impact and be a precious commodity.