Did you bring your can opener? because this will be a can of worms.
But in all seriousness - I would do some reading online and also speak to your GP. See if he falls into a high risk group. Make a call based on what you've read and been told and what your own feelings are.
There is some good stuff online.So long as you check your sources are reliable you should get a good idea about what's best for you both.
Did the PAFT lady have a particular reason she thought he should get it?