Breakthrough SARS-CoV-2 Infections in Health Care Workers In a German study, 4 health
care workers out of 1137 (0.35%) who had received one of the mRNA SARS-CoV-2 …

Vaccine breakthrough SARS-CoV-2 infection has been monitored in 3720 healthcare
workers receiving 2 doses of BNT162b2. SARS-CoV-2 infection is detected in 33 subjects …

Background Despite the high efficacy of the BNT162b2 messenger RNA vaccine against
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), rare breakthrough …

Background The pandemic of coronavirus disease 2019 (COVID-19), caused by the severe
acute respiratory syndrome coronavirus 2 (SARS-CoV-2), had a significant impact …

Methods| In March 2020, St Jude Children's Research Hospital initiated routine, test-based
screening of asymptomatic workers and targeted testing for symptomatic individuals and …

Background Previous infection with SARS-CoV-2 affects the immune response to the first
dose of the SARS-CoV-2 vaccine. We aimed to compare SARS-CoV-2-specific T-cell and …

One week after second vaccinations were administered, an outbreak of B. 1.1. 7 lineage
severe acute respiratory syndrome coronavirus 2 infections occurred in a long-term care …

On 27th December 2020 the vaccine campaign against SARS-CoV-2 started in Europe.
Because of the high risk and their crucial role in tackling SARS-CoV-2 pandemic, healthcare …

Covid-19 Booster in Long-Term Care Facilities During a surge in cases of Covid-19 in Israel,
a rapid deployment of BNT162b2 booster injections was initiated in long-term care facilities …

Importance Despite the high 3-dose vaccination rate among health care workers (HCWs) in
Israel, a high rate of SARS-CoV-2 breakthrough infections in this group was observed during …