[Adverse events from the Pfizer-BioNTech® COVID-19vaccine in children 5-17 years old].

Objetives: To describe the events supposedly attributable to immunization with the Pfizer-BioNTech® COVID-19 vaccine in children aged 5 to 17 years in the state of Puebla, Mexico.

Methods: Observational, cross-sectional and descriptive study carried out based on the analysis of reports of events supposedly attributable to immunization in children aged 5 to 17 years, who received the vaccine with the BNT162b2 mRNA platform for COVID-19, since January. to December 2022.

[Cognition in medical residents with and without anxiety in a specialist training hospital].

Background: The resident doctor plays an important role in people's health care.

Objective: To compare the cognition of medical residents with/without anxiety in a specialist training hospital.

Material And Methods: Comparative, prospective, cross-sectional study.

[Frequency of clinical characteristics and factors associated with mortality in patients hospitalized for COVID-19 in Puebla, Mexico].

Background: Mexico has a very high mortality rate from COVID19, risk factors, clinical manifestations of our population are unknown.

Objective: To know risk factors for mortality from COVID19 in hospitalized patients of the Secretary of Health (SSA) Puebla, and clinical characteristics.

Material And Methods: Case-control, observational, retrospective, cross-sectional study in COVID-19 patients.

Efficacy of the Mechanistic Score and COVID-19 Mortality Risk scales to assess the risk of mortality in patients hospitalized for COVID-19.

Introduction: Chronic diseases are associated with a higher risk of mortality from COVID-19.

Objective: To compare the efficacy of the Mechanistic Score and COVID-19 Mortality Risk scales for assessing the risk of mortality in patients hospitalized for COVID-19.

Methods: Comparative, observational, retrospective study.

Analysis of the Direct Cost of Medical and Surgical Care for Testicular Cancer in Early and Advanced Stages in a Third Level Medical Facility of the Mexican Social Security Institute.

Background: The testicular cancer prevails in the third decade of life, the care cost increases with higher staging of the disease.

Objective: Compare the direct costs of medical and surgical attention for testicular cancer in early and advanced stages in a Third Level Medical Facility.

Material And Methods: Process study, direct costs of medical attention are evaluated.