Introduction:

The vaccines developed during the COVID-19 pandemic were developed to offer immunity against the virus and avoid the disease, thus reducing fatal complications.

Objectives:

To determine the epidemiological characteristics of patients with COVID-19, admitted to the Medical Clinic service of the Regional Hospital of Encarnación and to describe the vaccination schedule and the relationship between the diagnosis of COVID-19 pneumonia and vaccination against it.

Methodology:

Descriptive, observational, cross-sectional study carried out from March 2021 to November 2023. Non-probabilistic sampling was applied for convenience. Patients admitted to the Medical Clinic service of the Regional Hospital of Encarnación, Paraguay, with a diagnosis of COVID-19 were included.

Results:

The sample consisted of 806 patients, 63.28% of whom were female. The average age was 44 ± 21 years and 52.73% came from the Encarnación district. Eleven-point seventy-nine percent corresponded to patients hospitalized with a diagnosis of COVID-19 pneumonia, 34.74% of whom had some vaccination schedule against the virus and 88.21% corresponded to patients hospitalized for COVID-19 and others. diagnoses, of which 69.06% had some vaccination schedule. The most common comorbidities were smoking, diabetes, and obesity. It was found that vaccination was related to the lower frequency of COVID-19 pneumonia.

Conclusions:

A predominantly female sample was found, the average age corresponds to the group of young adults, and the patients resided mainly in the city of Encarnación. The frequency of hospitalizations for COVID-19 with some vaccination schemes against the virus was considerable. The common risk factors or comorbidities were chronic heart disease, high blood pressure, and diabetes mellitus. It was statistically determined that vaccination and the number of doses of the vaccine were related to the lower frequency of COVID-19 pneumonia.

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