I got one dose of the J&J back in 2020 and to my knowledge never had Covid (never had symptoms, never been tested). Never wore a mask, regularly hang out in pa

I got one dose of the J&J back in 2020 and to my knowledge never had Covid (never had symptoms, never been tested). Never wore a mask, regularly hang out in packed bars, and spent a week sitting next to my cousin who had Covid while on vacation. Just lucky? Some sort of natural immunity? Or an asymptomatic case? Hard to say.