3 ms·
It's because their antibody response is similar to those who got just a single dose of COVID-19 vaccine, which is not enough to protect against Delta variant. I
by summerlight 5y ago
It's because their antibody response is similar to those who got just a single dose of COVID-19 vaccine, which is not enough to protect against Delta variant. I suspect natual immunity played a huge role in prevention of vanilla COVID and Alpha variant but it's not with Delta which probably contributes to the recent spike.