Originally Posted by
MSPeconomist
OP doesn't say where parents are from, but Covishield vaccine suggests it is not the USA.
OP: would it make sense for your parents to get an additional does of the EU approved they were given? Will NHS do it? This would seem to provide reassuring additional protection.
if their vaccine record shows that dose 2 has already been administered, they shouldn’t be able to get another just yet, unless they fall into a category for boosters.