With the odds stacked against the US reaching the target of 70% of adults partially vaccinated by July 4 — a goal set by President Joe Biden — a vaccine expert said time is running out to get ahead of the potential spread of Covid-19 variants.
With the odds stacked against the US reaching the target of 70% of adults partially vaccinated by July 4 — a goal set by President Joe Biden — a vaccine expert said time is running out to get ahead of the potential spread of Covid-19 variants.