Resumen de Efectividad de la vacuna BNT162b2 para prevenir la COVID-19 en personal sanitario

Pablo Chico Sánchez, Paula Gras Valentí, Natividad Algado Sellés, Esperanza Merino de Lucas, Juan Carlos Rodríguez Díaz, Elena Ronda Pérez , José Sánchez Payá

• español

  Objetivo Conocer la efectividad de la vacuna BNT162b2 en personal sanitario de un departamento de salud.

  Método Estudio de casos y controles con prueba negativa. Se incluyó personal sanitario con sospecha de COVID-19 y personal sanitario que fue contacto estrecho de casos de COVID-19 entre el 25 de enero y el 6 de junio de 2021. Se les realizó prueba de reacción en cadena de la polimerasa (PCR) para SARS-CoV-2; aquellos con PCR positiva fueron considerados casos y aquellos con PCR negativa fueron considerados controles. Se calculó la efectividad vacunal ajustada (EVa) para prevenir casos de COVID-19 y su intervalo de confianza del 95% (IC95%), mediante la fórmula EV=(1−odds ratio)× 100.

  Resultados Se incluyeron 624 profesionales sanitarios; de ellos, 43 (6,9%) casos y 581 (93,1%) controles. La EVa de la pauta completa fue del 96,3% (IC95%: 82,5-99,2) y la de la pauta incompleta del 68,0% (IC95%: 30,0-85,4).

  Conclusiones La administración de la pauta completa de vacuna es efectiva para la prevención de casos de COVID-19 en el personal sanitario.

• English

  Objective To assess the effectiveness of the vaccine against SARS-CoV-2 (BNT162b2) in healthcare personnel of a health department.

  Method Test-negative case̶control study. Healthcare personnel with suspected COVID-19 and healthcare personnel close contacts of COVID-19 cases were included between January 27th and June 6th, 2021. They were PCR tested for SARS-CoV-2; those with positive PCR were considered cases and those with negative PCR were considered controls. The adjusted vaccine effectiveness (aVE) to prevent COVID-19 cases and their 95% confidence interval (95%CI) were calculated using the formula VE=(1−odds ratio)×100.

  Results 624 healthcare personnel were included, of which 43 (6.9%) were considered cases and 581 (93.8%) controls. The aVE of the complete regimen was 96.3% (95%CI: 82.5̶99.2). The aVE of the incomplete pattern was 68.0% (95%CI: 30.0̶85.4).

  Conclusions The administration of the complete pattern of BNT162b2 vaccine against SARS-CoV-2 is effective for the prevention of cases of COVID-19 in healthcare personnel.