Biden administration to offer second COVID-19 boosters to those 50+
Mar 28, 2022
Although a second booster for older adults will be offered, federal health officials will not go so far as to recommend it.
COVID-19 vaccine effectiveness changing with delta predominance
Sep 14, 2021
Vaccine protection against SARS-CoV-2 infection declined; protection remained higher against hospitalization, death.
Vaccine makers already testing their shots against omicron variant
Nov 29, 2021
So far, existing vaccines have proven effective against prior coronavirus variants, including the delta variant.
Vaccination seems less protective against transmission of delta variant
Jan 07, 2022
The reduction in transmission of SARS-CoV-2 associated with COVID-19 vaccination was smaller for the delta variant versus the alpha variant.
mRNA vaccines effectively prevent SARS-CoV-2 in adults in real-world setting
Jul 01, 2021
For those with SARS-CoV-2 infection, vaccinated participants had a lower mean viral load, risk of febrile symptoms and illness duration.
200 million Americans are now fully vaccinated as COVID-19 cases spike
Dec 09, 2021
White House officials noted that 12.5 million shots were given last week, the highest weekly total since May.
SARS-CoV-2 vaccine does not increase new-onset seizure risk
Apr 30, 2024
The findings compared with placebo at 28-day and 43-day follow-up.
Antibody levels after COVID-19 vaccination inversely linked to body weight
May 23, 2022
An inverse correlation was sustained for up to six months following two doses of BNT162b2 (Pfizer–BioNTech) in a small cohort of healthy young and middle-aged adults.
Vaccination offers partial protection for postacute phase of COVID-19
May 31, 2022
Individuals with breakthrough infection have an increased risk for death and postacute sequelae compared with contemporary controls.
Fourth mRNA COVID-19 vaccine immunogenic, safe
Mar 24, 2022
Vaccine efficacy 30% for BNT162b2(Pfizer) and 11 percent for mRNA-1273 (Moderna) against any SARS-CoV-2 infection.