No elevated risk for stroke seen after COVID-19 bivalent vaccine receipt
Mar 20, 2024
No evidence was seen for an increased risk for stroke in one- to 21-day or 22- to 42-day windows compared with a 43- to 90-day window after the vaccine.
Immunoglobulin G spike receptor binding domain antibody levels were similar after the primary series and booster dose.
Simultaneous flu vaccine, COVID-19 booster safe
Jul 21, 2022
Systemic reactions generally were mild and were slightly more likely among those receiving both vaccines compared with the COVID-19 mRNA booster alone.
Fourth dose of BNT162b2 offers protection against severe COVID-19
Apr 08, 2022
Protection against COVID-19 did not wane in six weeks after receipt of fourth dose of the Pfizer–BioNTech vaccine; protection against the infection waned.
Effectiveness of Ad26.COV2.S vaccine stable for six months
Mar 22, 2022
A single dose of the Johnson & Johnson vaccine was 74% and 81% effective for preventing COVID-19 infection and hospitalizations, respectively, in the U.S. before and during delta variant surge.
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.
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.
Adverse events after BNT162b2 do not differ for cancer patients
Feb 08, 2022
Among patients with cancer, pain at the injection site was less likely after dose 1 for those receiving active treatment.
NVX-CoV2373 vaccine protects against COVID-19
Dec 27, 2021
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.
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).