A bit off-topic perhaps.
I have this friend of mine (40 years old) that got the COVID-19 twice, he got out of isolation 10 days ago. First time he did it in Oct.-Nov. last year (he probably got it from her wife who's Dr.), he got most of the symptoms: fever for about a week, headache and chills etc. He thought he got antibodies then and later he got a masseuse lady starting January to handle his back pains twice a week. From her he got the COVID-19 for the second time and it was even worse than the first time, so quite unexpected.
This is from the doctors and studies, not from me: getting COVID-19 may give you antibodies for 1 to 3 months, while getting vaccinated will give you antibodies for 8 to 12 months! This is why I got vaccinated recently. However, to ensure that I will not take and spread any viruses around, to the unvaccinated people, I'm still using hand alcohol when I get home from stores and office, wear masks every time when outside home or inside the office, sterilise everything I purchase from stores or online with >70% alcohol wipes or with UV-C light for about 15-20 min. (DIY big box with 18W Philips UV-C inside) and do nasal infiltrations when I get home from supermarkets or malls (even if I was wearing a mask, even if I am vaccinated). My kid is also washing his hands, face and the inside of his nose every time he gets back from the school (there is a dedicated spray for this with marine salt water).
COVID-19 is firstly multiplying inside our nose and sinuses, then later is getting into our lungs, so cleaning hands, face and the nose when we got home is the first line of defence for us in the first few hours after getting a virus.
Stay all safe and try not to infect others, as others may die because we infect them!
P.S.: I already lost my father in law because of people around not wearing masks and not washing their hands properly, so let's not do same mistakes ourselves.