How much protection do you have 3 weeks after the first jab of AZ?

[ssd]

Ive seen so many different answers I'm really confused.
If anyone knows , how much protection will someone have and from what mutations? This is after the first jab only, 3 weeks on.

70% ish against serious illness against general disease, but there aren't many rigorous tests against the many specific dodgy variants.

Do we know how many dodgy variants are in the UK?

They don't sequence every covid+ PCr test, plus it takes a while for it to become clear that any specific variant is especially dangerous or infectious, so technically we can't ever know the truly up to date situation.

Thats good to remember.