Hi Susan,
I posted this to your earlier post, but thought it bears repeating here too. Monoclonal therapy is not a vaccine and is not a replacement for getting vaccinated. It is my understanding that monoclonal antibody therapy has emergency use authorization (EUA) for REGEN-COV (casirivimab and imdevimab, administered together). This monoclonal antibody therapy is for adults and children over 12 who are at high-risk of hospitalization or death after a known exposure to someone with COVID-19.

The FDA states that:
"Prophylaxis with REGEN-COV is not a substitute for vaccination against COVID-19. FDA has authorized three vaccines to prevent COVID-19 and serious clinical outcomes caused by COVID-19, including hospitalization and death. FDA urges you to get vaccinated, if you are eligible."

Here's more information:
– FDA authorizes REGEN-COV monoclonal antibody therapy for post-exposure prophylaxis (prevention) for COVID-19 https://www.fda.gov/drugs/drug-safety-and-availability/fda-authorizes-regen-cov-monoclonal-antibody-therapy-post-exposure-prophylaxis-prevention-covid-19

It doesn't look like a one vs the other situation but rather vaccination is recommended and monoclonal therapy is an option if you've have exposure to COVID-19 and are in a high-risk category. Have you been exposed to someone with COVID?