Nosocomial outbreak caused by the SARS-CoV-2 Delta variant in a highly vaccinated population, Israel, July 2021
Pnina Shitrit, Neta S. Zuckerman, Orna Mor, Bat‐Sheva Gottesman, Michal Chowers
Abstract
A nosocomial outbreak of SARS-CoV-2 Delta variant infected 42 patients, staff and family members; 39 were fully vaccinated. The attack rate was 10.6% (16/151) among exposed staff and reached 23.7% (23/97) among exposed patients in a highly vaccinated population, 16-26 weeks after vaccination (median: 25 weeks). All cases were linked and traced to one patient. Several transmissions occurred between individuals wearing face masks. Fourteen of 23 patients became severely sick or died, raising a question about possible waning immunity.
Topics & Concepts
OutbreakSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)VirologyCoronavirus disease 2019 (COVID-19)2019-20 coronavirus outbreakMedicinePopulationBetacoronavirusEnvironmental healthInternal medicineInfectious disease (medical specialty)DiseaseSARS-CoV-2 and COVID-19 ResearchCOVID-19 Clinical Research StudiesCOVID-19 diagnosis using AI