SARS-CoV-2 new infections among health-care workers after the first dose of the BNT162b2 mRNA COVID-19 vaccine. A hospital-wide cohort study.

Objectives: To evaluate the effect of mRNA severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination on the incidence of new SARS-CoV-2 infections in health-care workers (HCW).

Methods: The evolution of the incident rate of microbiologically confirmed SARS-CoV-2 infection in a cohort of 2590 HCW after BNT162b2 mRNA SARS-CoV-2 vaccination, compared with the rate in the community (n = 170 513) was evaluated by mixed Poisson regression models.

Results: A total of 1820 HCW (70.

[Staphylococcus spp. in Spain: present situation and evolution of antimicrobial resistance (1986-2006)].

Introduction: Since 1986 we have carried out five nationwide point-prevalence studies in Spain analyzing Staphylococcus spp. The 2006 data, corresponding to the sixth study, are presented herein.

Methods: A total of 145 hospitals from all geographic areas of the country participated in the study.