ABSTRACT
Introduction: The contingency imposed by the COVID-19 to the nursing staff to take measures stricter of biosafety, in order to reduce or to eliminate the risk of infection. Objective: To evaluate the effectiveness of educational intervention in knowledge on COVID-19 and biosafety in helping nurses exposed to the SARS-CoV-2.Methods: Quasi-experimental quantitative research without control group in helping nurses of the province Mayabeque in the period February-April 2020. Universe 80 nurses, conforming two groups according to professional level;Group I (26 technicians) and group II (54 graduates). A patterned opinion poll was applicable and coefficient of Kuder-Richardson was calculated and Alfa of Cronbach. Frequency distributions, in the case of the quantitative variables were used: Stocking, standard deviation, variance, minimal/maximum value, the association between variables obtained himself with the proof not parametric of stations with sign of Wilcoxon. Results: The female sex predominated (23.75% technical group, 56.25% graduates group). The mean age was higher in the graduates (39,72 years) regarding (34,42 years). The level of knowledge of COVID-19 rose after the intervention (69,23% group I, 74.07% group II) whilst the knowledge on principles and standards of biosafety increased in both groups (88.46% and 100%). The knowledge about precautions standards rose in 65.38% technical group and 92.59% graduates group. Conclusions: The educational intervention in the knowledge on COVID-19 and biosafety in helping nurses exposed to the SARS-CoV-2, was effective with statistical significance in the level of knowledge of the group licenced regarding the technician. © 2021, Editorial Ciencias Medicas. All rights reserved.