With the emergence of effective vaccines against SARS-CoV-2, the need to find the determinants for its correct distribution is created, with health personnel being an essential group where coverage must be ensured. Materials and Methods: A cross-sectional study was conducted through an electronic survey that was distributed to health personnel in the state of Nuevo Leon, Mexico. Potential determinants for vaccine hesitancy were covered including their intention to be vaccinated against SARS-CoV-2. Results: A total of 543 responses were collected from health professionals, which 30 (5.5%) of the subjects stated that they would reject SARS-CoV-2 vaccination. How well informed the subjects were was the most determining factor, where misinformation related to vaccination and COVID-19 was the most important cause of vaccine rejection. Conclusion: The implementation of educational strategies for health personnel are required.

An analysis of the adoption of secondary preventive behaviors is significant in regions with disparities in mammography use and breast cancer survival. Therefore, we determined the cognitive factors and the degree to which they differentiate stages of change in mammography among Mexican women. We also compared the decisional balance performance at Mexico, Switzerland, South Korea, and the USA. A cross-sectional study was designed for women in the stages of precontemplation (n = 240), contemplation (n = 243), action (n = 205), maintenance (n = 311), and relapse (n = 348). We only considered those ≥40 years with no cancer history. We measured the pros, cons, and self-efficacy, among other components. The decisional balance was estimated, and the result was transformed into T-scores. Odds ratios (OR) and 95% confidence intervals (CI) were estimated with multinomial logistic regression using precontemplation as the reference group. The decisional balance distinguished stages partially: in contemplation, the OR was 1.26 (95%CI 1.08, 1.47) and in maintenance, 1.34 (95%CI 1.13, 1.59); in action and relapse, the statistical significance was marginal (p < 0.10). The decisional balance T-score performance registered variations among countries. Additionally, the effect of self-efficacy progressively ascended from contemplation to action and maintenance (OR = 1.29 [95%CI 1.05, 1.58], 1.53 [95%CI 1.20, 1.96], and 2.48 [95%CI 1.82, 3.39], respectively). Furthermore, risk perception and severity did not have an effect on stages of change among Mexican women. Recognition of what provokes action in a population is a key factor in the efficacy of screening programs. Variations among countries highlight the necessity for importance of investigating cognitive determinants for mammography in specific areas.