> surviving a previous infection now provided greater protection against the subsequent infection than vaccination
> Protection against Delta was highest, however, among people who were both vaccinated and had survived a previous COVID infection
So natural immunity is better than only being vaxed, but getting a vaccine increases your protection in both cases.
In order of protection:
1. cleared infection + vax 2. cleared infection 3. vax
Also natural infection antibodies have been shown to last for at least 20 months. We know vaccine one wanes in 3-6 months.
There's also some evidence on those with prior infection having higher chances of side-effects, though more research is needed.
https://covid.joinzoe.com/post/vaccine-after-effects-more-co...