A study conducted in the U.S. and Mexico shows that the vaccine is 90% effective overall and 100% effective against moderate-to-severe disease.
ACR: Lupus patients can have low immune response to COVID-19 vaccines
Nov 15, 2021
Overall disease activity does not appear to change after vaccination, however.
Flu vaccine may protect against adverse events after SARS-CoV-2
Aug 17, 2021
Individuals who had received a flu vaccination had lower risks for sepsis, stroke and deep vein thromboses as well as emergency department and ICU admissions
Vaccine effectiveness up after three COVID-19 vaccine doses
Feb 14, 2022
Vaccine effectiveness was lower during the omicron- versus the delta-predominant period at all time points; it waned with increasing time since vaccination.
Rates of COVID-19, severe illness lower with BNT162b2 booster dose
Dec 09, 2021
A second study shows a reduction in the rate of death due to COVID-19 with a booster dose of BNT162b2 (Pfizer–BioNTech).
Vaccine rollout linked to drop in severe COVID-19 in dialysis patients
Feb 28, 2022
And patients on maintenance dialysis who received COVID-19 vaccination had decreasing antibody titers over time.