Methods| The Oregon Health & Science University conducted large-scale vaccination of all
workforce members in accordance with Oregon vaccination guidelines between December …

Methods| Fully vaccinated health care workers subsequently diagnosed with SARS-CoV-2
breakthrough infection based on a positive polymerase chain reaction (PCR) test result were …

Methods| A convenience sample of 3500 health care workers from the Johns Hopkins
Health System were enrolled starting June 2020 and followed up through September 3 …

Methods| After the initial authorization of a third dose in Israel, Rabin Medical Center (RMC)
offered this dose to workers and their family members and recruited study participants aged …

Understanding the impact of prior infection with severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) on the response to vaccination is a priority for responding to …

Methods| Serum samples were obtained from 3 groups of individuals. At Emory University,
hospitalized adults with SARS-CoV-2 infection (polymerase chain reaction confirmed) were …

Methods Health care workers who had previously enrolled in a hospital-wide serosurvey
study, 3 conducted from July to August 2020 at the University of Maryland Medical Center …

We analyzed data from two ongoing COVID-19 longitudinal serological surveys in Orange
County, CA., between April 2020 and March 2021. A total of 8476 finger stick blood …

Two COVID-19 mRNA vaccines, BNT162b2 (ie, Pfizer/BioNTech) and mRNA-1273 (ie,
Moderna), were approved via the US Food and Drug Administration Emergency Use …

Importance West Virginia prioritized SARS-CoV-2 vaccine delivery to nursing home facilities
because of increased risk of severe illness in elderly populations. However, the persistence …