Introduction: Students may be tutors in clinical medicine and other areas.Objective: To evaluate the teaching abilities of students as tutors in a critical appraisal research course, during their internship. Material and Methods: Two groups were studied: G 1 (n=5) was taught by a Professor and included group discussions, and G 2 had four student tutors and engaged in sub-group discussions (n=10). The course lasted 40 hours and was conducted on the basis of resolving reading guide's in-house and referred discussion. Five instruments were applied: 1) critical reading including 108 items, 2) sub-group activities led by the professor, included 17 items, 3) student activities in sub-group discussions, with 18 items, 4) evaluation of the professor's qualitative characteristics by the students that included 8 items and 5) a self-evaluation of the student tutor consisting of 10 items. Instruments 1, 2 and 4 were evaluated before and after the course. Instrument 1 was graded by adding the correct answers and subtracting those that were incorrect; medians were recorded. Both groups were compared with Mann Whitney U and Wilcoxon tests, statistical weight and randomness. A Likert scale was also used with values ranging from 1 (minimum) to 4 (maximum), in instruments 2 to 5; the values were added and medians were used. Consistency was determined in instruments 1 to 4. Results: No significant differences were detected between both groups in critical reading before and after the interventions, although statistical weight did increase and randomness decreased in G 2 . Instruments 2, 3 and 4 (Cronbach's alpha > 0.75), reported adequate medians in almost all aspects; instrument 2 revealed almost maximum final results in G 2 . The tutors' affection for students increased. Discussion: Student tutors can develop complex teaching abilities and foster student learning. These strategies are underutilized in our milieu. en G 2 . Los instrumentos 2, 3, 4 (Alfa de Cronbach > 0.75) reportaron medianas adecuadas en casi todos los aspectos. En instrumento 2, resultados cercanos al máximo al final en G 2 . Los tutores incrementan el afecto por sus alumnos. Discusión: Alumnos tutores pueden desarrollar habilidades docentes complejas apoyando el aprendizaje en estudiantes. Estas estrategias están subutilizadas en nuestro medio.

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Prueba de aglutinación de látex en placa para la determinación cualitativa y semi-cuantitativa de Proteína C Reactiva en suero no diluido.

mainly from the respiratory tract. To date, the time interval in which an individual infected with COVID-19 is infectious is unknown, 3 due to the evidence that some studies have shown in asymptomatic individuals, they can continue to transmit the infection. 4