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Inicio Vacunas (English Edition) Is there any effect of flu vaccine on the SARS-CoV-2 infected patients?
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Vol. 23. Issue 2.
Pages 71-76 (May - August 2022)
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Vol. 23. Issue 2.
Pages 71-76 (May - August 2022)
Special article
Is there any effect of flu vaccine on the SARS-CoV-2 infected patients?
¿Tiene algún efecto la vacuna frente a la gripe en los pacientes infectados por SARS-CoV-2?
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D. El-Qutoba,
Corresponding author
elqutob@comv.es

Corresponding author.
, M. Nietoa, L. Alvarez-Arroyob, F.J. Carrera-Huesob
a Unit of Allergy, Universitary Hospital of La Plana in Vila-Real, Spain
b Service of Pharmacy, Universitary Hospital of La Plana in Vila-Real, Spain
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Abstract
Objectives

On 11 March, WHO declared a global pandemic caused by a new virus of the family Coronaviridae that has since been called SARS-CoV-2. COVID-19 does not have specific antiviral drug treatment currently. There are currently more than one hundred research projects into vaccines against SARS-CoV-2 worldwide, and 17 of them are already being tested on humans, according to the WHO. Until we have an effective vaccine, the possible preventive effect of flu vaccine for SARS-CoV-2 infection based on cross-reactivity has been postulated.

Our objective was to analyse the effect of vaccination against flu virus in the season prior to the COVID-19 pandemic in our hospitalized SARS-CoV-2 infected patients.

Methods

We performed a retrospective observational cohort study of patients admitted to hospital with SARS-CoV2 infection. We analysed the differences between patients who had received or had not the flu vaccination for the 2019–2020 season.

Results

We found no significant differences (p=0.09) in patients who died (43 in total), of whom 23 (21.5%) were vaccinated against the flu and 20 (13.5%) were not. In mortality, we obtained an adjusted OR=0.873 (95% CI: 0.294–2.083), and about the success of health care the adjusted OR was 1.447 (95% CI: 0.610–3.430).

Conclusions

Flu vaccination in patients admitted for SARS-CoV-2 infection had neither a beneficial nor a harmful effect on the clinical courses or outcomes of patients admitted to an European hospital.

Keywords:
Coronavirus
COVID-19
Severe Acute Respiratory Syndrome Coronavirus 2
Vaccination
Influenza
Human
Resumen
Objetivos

El 11 de marzo, la OMS declaró una pandemia global causada por un nuevo virus de la familia Coronaviridae que desde entonces ha sido denominado SARS-CoV-2. Actualmente no existe ningún tratamiento frente a la COVID-19 con fármacos antivirales específicos. A día de hoy existen más de 100 proyectos de investigación sobre vacunas frente a SARS-CoV-2 a nivel mundial, habiendo sido ya probados 17 de ellas en humanos, según la OMS. Hasta que no se disponga de una vacuna efectiva se ha postulado el posible efecto preventivo de la vacuna frente a la gripe para la infección por SARS-CoV-2, basado en la reactividad cruzada.

Nuestro objetivo fue analizar el efecto de la vacuna frente a la gripe en la temporada previa a la pandemia de COVID-19 en nuestros pacientes hospitalizados infectados por SARS-CoV-2.

Métodos

Realizamos un estudio retrospectivo observacional de cohorte de pacientes hospitalizados por SARS-CoV-2. Analizamos las diferencias entre los pacientes que habían recibido y los que no habían recibido aún la vacuna para la temporada 2019-2020.

Resultados

No encontramos diferencias significativas (p=0,09) en cuanto a los pacientes fallecidos (43 en total), de los cuales 23 (21,5%) habían sido vacunados frente a la gripe y 20 (13,5%) no habían sido vacunados. En términos de mortalidad, obtuvimos un OR: 0,873 (IC 95%: 0,294-2,083), y en lo referente al éxito de los cuidados sanitarios el OR ajustado fue de 1,447 (IC 95%: 0,610-3,430).

Conclusiones

La vacunación frente a la gripe en los pacientes ingresados por SARS-CoV-2 no tuvo un efecto beneficioso ni perjudicial en los cursos clínicos o resultados de los pacientes ingresados en un hospital europeo.

Palabras clave:
Coronavirus
COVID-19
Síndrome respiratorio agudo severo por coronavirus 2
Vacunación
Gripe, Humanos

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