Introduction:

COVID-19 caused healthcare professional workers have faced the pandemic on the frontline at the risk of being infected with the virus. Despite the low mortality rate at present and the low presence of patients with COVID-19 in health care centers, the application of a fourth booster dose has generated different positions among several countries.

Objective:

To determine whether personnel considered being at high risk of vulnerability in the city of Santo Domingo de los Colorados, Ecuador, have favorable intentions for receiving the fourth booster dose of the COVID-19 vaccine.

Method:

A quantitative study of correlational scope and cross-sectional design was developed. A questionnaire consisting of 16 questions measured the following variables: risk of infection, perceived knowledge of the vaccine, confidence in the vaccine and intention to be vaccinated; this questionnaire was applied to 375 participants. Statistical analyses were developed using the microsoft Excel spreadsheed and Statistical Packagefor Social Sciences 21 (SPSS 21).

Results:

Statistical analyses showed that the risk of infection (β=0.178**), perceived knowledge about the vaccine (β=0.218**) and confidence about the vaccine (β=0.192**) are significantly correlated with the intention to be fully vaccinated, thus showing the need for a fourth booster dose by vulnerable sectors.

Conclusion:

This is the first research that presents results regarding the intention to vaccinate vulnerable people and highlights the intention to access a fourth booster dose.

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