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