[Steve Van Doorn]

said, "70% effective"
Having RH- A+ or O+ blood types you have about +90% chance of not getting infected at all
https://www.researchgate.net/publication/340591535_Testing_the_association_between_blood_type_and_COVID-19_infection_intubation_and_death

[conservative98]

90% against severe disease. Against mild to moderate disease, it didn’t work as well.

Right now without the vaccine I am still 100%.