Will delaying the second Covid-19 vaccine jab work?

British health officials are delaying the administration of the second Covid-19 jab in order to provide more people with some protection from a single jab, but there is no evidence this will work as hoped. — dpa

In an effort to faster provide a basic level of Covid-19 immunity to a larger section of the population, health officials in the United Kingdom have decided to delay the second of the two vaccinations needed for long-term protection.

In theory, this means more people will get a fundamental level of immunity from a first vaccination, but also that people have to wait longer for their second vaccination.