Effect of COVID-19 mortality on life expectancy in municipalities of Mexico. Comparison between 2019 and 2020.

BACKGROUND: Life expectancy (LE) is an indicator related to medical, demographic, social and geographic conditions. OBJECTIVES: To analyze the effect of the COVID-19 pandemic on LE and of its distribution according to sociodemographic variables in municipalities of Mexico. METHODS: Information on mortality was collected from data published by the Ministry of Health, and demographic information, from the 2020 Population and Housing Census. LE was calculated according to the standard actuarial method. A risk analysis was carried out between expected years of life lost and the size of the economically active population, years of education and indigenous-speaking population. RESULTS: In 2020, there was a nation-wide average drop of 4.7 years in LE, but its distribution was heterogeneous at the municipal level, with extreme values of -2.8 years and 12.6 years. The risk analysis showed an inverse relationship between sociodemographic variables and expected years of life lost, except for the indigenous-speaking population. CONCLUSIONS: The impact of the COVID-19 pandemic on LE in Mexico was significant and was influenced by the analyzed sociodemographic variables, particularly by the municipalities' population size.

ANTECEDENTES: La esperanza de vida es un indicador relacionado con condiciones médicas, demográficas, sociales y geográficas. OBJETIVOS: Analizar el efecto de la pandemia de COVID-19 en la esperanza de vida y de su distribución según variables sociodemográficas en municipios de México. MATERIAL Y MÉTODOS: Se recabó información sobre mortalidad de la Secretaría de Salud, así como información demográfica del Censo de Población y Vivienda de 2020. La esperanza de vida se calculó conforme el método actuarial estándar. Se realizó análisis de riesgo entre la pérdida de la esperanza de vida en años y el tamaño de la población, población económicamente activa, años de escolaridad y población de habla indígena. RESULTADOS: En 2020 se registró una caída promedio de 4.7 años en la esperanza de vida a nivel nacional, pero su distribución fue heterogénea en los municipios, con valores extremos de −2.8 años y 12.6 años. El análisis de riesgo mostró una relación inversa entre las variables sociodemográficas y la pérdida de años de esperanza de vida, con excepción de la población de habla indígena. CONCLUSIONES: El impacto de la pandemia de COVID-19 en la esperanza de vida en México fue significativo, matizado por las variables sociodemográficas analizadas, particularmente por el tamaño de la población de los municipios.

Efecto de la mortalidad por COVID-19 en la esperanza de vida en los municipios de México. Comparación 2019 y 2020 / Effect of COVID-19 mortality on life expectancy in municipalities of Mexico. Comparison between 2019 and 2020

Resumen Antecedentes: La esperanza de vida es un indicador relacionado con condiciones médicas, demográficas, sociales y geográficas. Objetivos: Analizar el efecto de la pandemia de COVID-19 en la esperanza de vida y de su distribución según variables sociodemográficas en municipios de México. Material y métodos: Se recabó información sobre mortalidad de la Secretaría de Salud, así como información demográfica del Censo de Población y Vivienda de 2020. La esperanza de vida se calculó conforme el método actuarial estándar. Se realizó análisis de riesgo entre la pérdida de la esperanza de vida en años y el tamaño de la población, población económicamente activa, años de escolaridad y población de habla indígena. Resultados: En 2020 se registró una caída promedio de 4.7 años en la esperanza de vida a nivel nacional, pero su distribución fue heterogénea en los municipios, con valores extremos de −2.8 años y 12.6 años. El análisis de riesgo mostró una relación inversa entre las variables sociodemográficas y la pérdida de años de esperanza de vida, con excepción de la población de habla indígena. Conclusiones: El impacto de la pandemia de COVID-19 en la esperanza de vida en México fue significativo, matizado por las variables sociodemográficas analizadas, particularmente por el tamaño de la población de los municipios.

Abstract Background: Life expectancy (LE) is an indicator related to medical, demographic, social and geographic conditions. Objectives: To analyze the effect of the COVID-19 pandemic on LE and of its distribution according to sociodemographic variables in municipalities of Mexico. Methods: Information on mortality was collected from data published by the Ministry of Health, and demographic information from the 2020 Population and Housing Census. LE was calculated according to the standard actuarial method. A risk analysis was carried out between expected years of life lost and the size of the population, economically active population, years of education and indigenous-speaking population. Results: In 2020, there was a nation-wide average drop of 4.7 years in LE, but its distribution was heterogeneous at the municipal level, with extreme values of -2.8 years and 12.6 years. The risk analysis showed an inverse relationship between sociodemographic variables and expected years of life lost, except for the indigenous-speaking population. Conclusions: The impact of the COVID-19 pandemic on LE in Mexico was significant, and was influenced by the analyzed sociodemographic variables, particularly by the municipalities' population size.

Autopercepción del peso a través de figuras corporales en niños en edad escolar de Piedras Negras, Coahuila, México / Self-perception of weight in school-age children from Piedras Negras, Coahuila, Mexico

Resumen: Introducción: Ante la tendencia mundial en el incremento del índice de masa corporal (IMC) en todos los grupos de edad, se han buscado estrategias de control. La baja percepción en el exceso de peso en niños escolares es un tema pendiente de explorar en la frontera norte de México. Métodos: Se obtuvo el IMC de alumnos de tercero a sexto grado de educación básica. Se compararon los IMC, percibido e ideal, con el IMC medido, evaluando subestimaciones y sobrestimaciones con respecto a este último. Se calcularon las prevalencias de la exactitud en el IMC percibido y la discrepancia de la imagen ideal respecto al IMC. Resultados: Se estudiaron 155 niños (43.8% del sexo femenino) con una edad promedio de 10.2 años. La prevalencia de la exactitud del IMC percibido respecto al medido fue del 59.4%. La prevalencia de discrepancia entre el IMC ideal y el medido fue del 44.4%. La comparación del IMC percibido con el medido mostró una sobrestimación en la categoría de peso bajo (33%) y subestimaciones en las categorías de peso normal (12.4%), sobrepeso (85%) y obesidad (81.6%). Al comparar el IMC ideal con el medido, se mostró una sobrestimación absoluta en la categoría de peso bajo y subestimaciones en las categorías de peso normal, sobrepeso y obesidad, del 5.6%, 100% y 97.4%, respectivamente. Conclusiones: El presente trabajo muestra en forma consistente la subestimación que los escolares hacen de su peso, particularmente los clasificados en las categorías de sobrepeso y obesidad. en un contexto demográfico donde la prevalencia de ambas categorías en este estudio fue alta, del 38%.

Abstract: Background: The prevalence of overweight and obesity has increased worldwide. In this context, the lack of awareness of excess weight among overweight and obese children is a public health concern that needs to be explored in the Northern border of Mexico. Methods: Body mass index (BMI) was calculated from children from third to sixth grades of basic education. The Children's Body Image Scale was applied to evaluate perceived and ideal BMI comparing against calculated BMI. We also analyzed the frequency of accurate perceivers of actual weight and discrepancy of ideal weight against calculated BMI. Results: We studied 155 children (43.8% were female) with a mean age of 10.2 years. Accuracy prevalence of BMI perceived respect to calculated BMI was 59.4%. Discrepancy prevalence of ideal BMI respect to calculated BMI was 44.4%. Comparison of perceived BMI respect to calculated BMI showed an overestimation on low weight category (33%) and subestimations in categories of normal weight (12.4%), overweight (85%) and obesity (81.6%). Comparison of ideal BMI respect to calculated BMI showed an absolute overestimation of low weight and underestimations in categories of normal weight, overweight and obesity of 5.6%, 100%, and 97.4%, respectively. Conclusions: The results of this work showed a consistent underestimation of children's body weight, particularly among those classified in categories of overweight and obesity in a demographic context in which the prevalence of both categories was of 38% in this study.

[Autopercepción del peso a través de figuras corporales en niños en edad escolar de Piedras Negras, Coahuila, México]. / Self-perception of weight in school-age children from Piedras Negras, Coahuila, Mexico.

Background: The prevalence of overweight and obesity has increased worldwide. In this context, the lack of awareness of excess weight among overweight and obese children is a public health concern that needs to be explored in the Northern border of Mexico. Methods: Body mass index (BMI) was calculated from children from third to sixth grades of basic education. The Children's Body Image Scale was applied to evaluate perceived and ideal BMI comparing against calculated BMI. We also analyzed the frequency of accurate perceivers of actual weight and discrepancy of ideal weight against calculated BMI. Results: We studied 155 children (43.8% were female) with a mean age of 10.2 years. Accuracy prevalence of BMI perceived respect to calculated BMI was 59.4%. Discrepancy prevalence of ideal BMI respect to calculated BMI was 44.4%. Comparison of perceived BMI respect to calculated BMI showed an overestimation on low weight category (33%) and subestimations in categories of normal weight (12.4%), overweight (85%) and obesity (81.6%). Comparison of ideal BMI respect to calculated BMI showed an absolute overestimation of low weight and underestimations in categories of normal weight, overweight and obesity of 5.6%, 100%, and 97.4%, respectively. Conclusions: The results of this work showed a consistent underestimation of children's body weight, particularly among those classified in categories of overweight and obesity in a demographic context in which the prevalence of both categories was of 38% in this study.

Introducción: Ante la tendencia mundial en el incremento del índice de masa corporal (IMC) en todos los grupos de edad, se han buscado estrategias de control. La baja percepción en el exceso de peso en niños escolares es un tema pendiente de explorar en la frontera norte de México. Métodos: Se obtuvo el IMC de alumnos de tercero a sexto grado de educación básica. Se compararon los IMC, percibido e ideal, con el IMC medido, evaluando subestimaciones y sobrestimaciones con respecto a este último. Se calcularon las prevalencias de la exactitud en el IMC percibido y la discrepancia de la imagen ideal respecto al IMC. Resultados: Se estudiaron 155 niños (43.8% del sexo femenino) con una edad promedio de 10.2 años. La prevalencia de la exactitud del IMC percibido respecto al medido fue del 59.4%. La prevalencia de discrepancia entre el IMC ideal y el medido fue del 44.4%. La comparación del IMC percibido con el medido mostró una sobrestimación en la categoría de peso bajo (33%) y subestimaciones en las categorías de peso normal (12.4%), sobrepeso (85%) y obesidad (81.6%). Al comparar el IMC ideal con el medido, se mostró una sobrestimación absoluta en la categoría de peso bajo y subestimaciones en las categorías de peso normal, sobrepeso y obesidad, del 5.6%, 100% y 97.4%, respectivamente. Conclusiones: El presente trabajo muestra en forma consistente la subestimación que los escolares hacen de su peso, particularmente los clasificados en las categorías de sobrepeso y obesidad. en un contexto demográfico donde la prevalencia de ambas categorías en este estudio fue alta, del 38%.

[Trend analysis of acquired syphilis in Mexico from 2003 to 2013]. / Análisis de la tendencia de sífilis adquirida en México durante el periodo 2003-2013.

OBJECTIVE: To identify the population group in which syphilis increase was concentrated. MATERIALS AND METHODS: The information was collected from the Mexico health statistical yearbooks. The information disaggregated by sex, age group and state during the period 2003 to 2013 was used to form different databases. Linear regression analysis with confidence interval at 95% was used to evaluate changes over time in different population groups. RESULTS: An increase of 0.67 cases per 100,000 population (95%CI 0.30-1.04) in men was detected from 2010. The increase was concentrated in each group of 20-24 and 25-44. The highest incidence of acquired syphilis was reported in the last two years: 2012 and 2013. The last year reported a 1.85 times higher incidence than reported in 2003. Aguascalientes, Distrito Federal, Durango, Mexico, Oaxaca, Puebla, Quintana Roo, Yucatan and Zacatecas reported that syphilis increased during the study period. CONCLUSION: Acquired syphilis may be reemerging in our country among young men; this increase is not uniform across the country, it is necessary to focus intervention measures for this sexually transmitted infection.

Análisis de la tendencia de sífilis adquirida en México durante el periodo 2003-2013 / Trend analysis of acquired syphilis in Mexico from 2003 to 2013

Objetivo. Identificar el grupo poblacional en el que se concentra el incremento de sífilis ocurrido durante los últimos años. Material y métodos. A partir de información obtenida de los Anuarios de Morbilidad de la Secretaría de Salud, se conformaron diversas bases de datos con información desagregada por sexo, grupo de edad y entidad federativa durante el periodo de 2003 a 2013. Mediante análisis de regresión lineal, se estimó el incremento con intervalos de confianza a 95%; se evaluaron los cambios a través del tiempo en los diversos grupos poblacionales analizados. Resultados. A partir de 2010 hay un incremento de 0.67 casos por 100000 habitantes (IC95% 0.30-1.04) entre los hombres, que se concentra en individuos de 20 a 24 y de 25 a 44 años. Las mayores incidencias de sífilis adquirida se reportaron en los dos últimos años: 2012 y 2013; este último año registró una incidencia 1.85 veces mayor a la reportada en el año 2003. Entidades como Aguascalientes, Distrito Federal, Durango, México, Oaxaca, Puebla, Quintana Roo, Yucatán y Zacatecas reportaron incrementos de sífilis adquirida durante el periodo de estudio. Conclusión. La sífilis adquirida aparentemente está reemergiendo en México entre hombres jóvenes, incremento que no es homogéneo en el país, por lo que es necesario focalizar medidas de intervención para esta infección de transmisión sexual.

Objective. To identify the population group in which syphilis increase was concentrated. Materials and methods. The information was collected from the Mexico health statistical yearbooks. The information disaggregated by sex, age group and state during the period 2003 to 2013 was used to form different databases. Linear regression analysis with confidence interval at 95% was used to evaluate changes over time in different population groups. Results. An increase of 0.67 cases per 100000 population (95%CI 0.30-1.04) in men was detected from 2010. The increase was concentrated in each group of 20-24 and 25-44. The highest incidence of acquired syphilis was reported in the last two years: 2012 and 2013. The last year reported a 1.85 times higher incidence than reported in 2003. Aguascalientes, Distrito Federal, Durango, Mexico, Oaxaca, Puebla, Quintana Roo, Yucatan and Zacatecas reported that syphilis increased during the study period. Conclusion. Acquired syphilis may be reemerging in our country among young men; this increase is not uniform across the country, it is necessary to focus intervention measures for this sexually transmitted infection.

Molecular epidemiology of Escherichia coli O25b-ST131 isolates causing community-acquired UTIs in Mexico.

Escherichia coli is a common uropathogen causing community-acquired urinary tract infections (UTIs). Out of 4735 E. coli community-acquired UTIs, 10.2% were extended spectrum ß-lactamases (ESBL)-producing. The identified ESBL types were CTX-M-15 (96.4%), SHV-2a (3%), and TLA-1 (1%). Of the isolates, 94.6% tested positive for plasmid-mediated quinolone resistance (PMQR) genes (aac(6')-lb-cr [92.1%] and qepA1 [7%] and for qnr-determinants [3.5%]). E. coli O25b-ST131 was identified in 25% of the isolates that harbor a non-conjugative 160-kb plasmid (IncFIA) containing the CTX-M-15, and all of these isolates were found to contain PMQR genes. This work can be useful in modeling the potential impact that may have on community-acquired UTIs in Mexico.

Correlates of STI symptoms among female sex workers with truck driver clients in two Mexican border towns.

BACKGROUND: Female sex workers (FSW) are at increased risk for HIV and other STI due to occupation-related risks and exposures. Long-distance truck drivers have been implicated in the spread of HIV, but less is known about HIV/STI risks of FSW servicing truck drivers, especially in North America. As part of an international collaborative pilot study, we interviewed FSWs servicing truck driver clients along two major transportation corridors to explore factors associated with recent STI symptoms. METHODS: A cross-sectional study of 200 FSW was conducted in Mexico: 100 from Nuevo Laredo (U.S. border); 100 from Ciudad Hidalgo (Guatemalan border). Eligibility criteria included age ≥18 years, speaking English or Spanish, and having ≥1 truck driver client in the past month. The main outcome was reporting any recent STI symptoms, defined as experiencing genital/anal warts, genital ulcers/sores, genital itching, or abnormal vaginal discharge in the past 6 months. Logistic regression was used to identify correlates of recent STI symptoms. RESULTS: Median age of FSW was 29 years, 74% were single, 87% had <9th grade education, and median income was 4000 pesos/month ($300 USD). Sex work occurred at a bar/cantina for 70%. One-quarter had never been tested for HIV, 53% reported lifetime drug use, 22% reported drinking alcohol before/during transactional sex and 17% reported recent STI symptoms. After controlling for age and study site, factors associated with STI symptoms were lifetime drug use (AOR 2.9, 95% CI 1.2-6.9), drug use before/during sex (AOR 2.8, 95% CI 1.1-7.1), alcohol use before/during sex (AOR 5.2, 95% CI 2.2, 12.6), forced sex ever (AOR 2.6, 95% CI 1.1-6.1), lifetime history of arrest (AOR 2.3, 95% CI 1.0-5.0), and being surveyed in Nuevo Laredo rather than Ciudad Hidalgo (AOR 4.8, 95% CI 2.0-10.0). CONCLUSIONS: The associations we observed between recent STI symptoms and drug and alcohol use suggest that interventions are needed that promote consistent and effective safer sex practices, especially while under the influence of alcohol or other substances.

Maternal/child seroprevalence of antibodies against Treponema pallidum at four general hospitals in the state of Morelos, Mexico.

BACKGROUND AND AIMS: Treponema pallidum can cause syphilis in pregnant women and congenital syphilis in the newborn. In Latin America, 330,000 pregnant women are diagnosed with syphilis every year. Adequate prenatal care to detect syphilis reduces maternal morbidity and fetal and neonatal mortality and morbidity. We undertook this study to determine T. pallidum seroprevalence among pregnant and puerperal women from Morelos, Mexico, as well as to evaluate the sexual behavior, demographic and clinical variables associated with the infection. METHODS: A cross-sectional study was carried out among pregnant and puerperal women from four general hospitals from Morelos, Mexico during 2005-2009. Women answered a questionnaire and provided a blood sample to detect antibodies against T. pallidum. RESULTS: A total of 2331 women were analyzed with 0.26% of T. pallidum seroprevalence. There were four cases with active syphilis and two cases with latent syphilis, as well as two cases of congenital syphilis. Illiterate women had 6.7 times higher risk of being infected. Women who did not undergo a urine test had a 5.3 times higher risk for infection and women who do not have piped water inside their household had a 5.0-fold higher risk of having anti-T. pallidum antibodies. All seropositive cases were from the same hospital (Cuautla General Hospital) with demographic, sexual behavior and medical care characteristics different from the other three hospitals. CONCLUSIONS: Syphilis during pregnancy and congenital syphilis are still present in Mexico. It may be that the more urban a population the higher the chance of the prevalence of maternal syphilis. It would be beneficial to reinforce the observance of the Official Mexican Norm and to implement rapid diagnostics tests to contend with this public health problem.

HIV risk behaviors differ by workplace stability among Mexican female sex workers with truck driver clientele.

BACKGROUND: In a study of female sex workers (FSW) servicing truck driver clients in Mexican border cities, we evaluated differences in HIV/STI risk behaviors by workplace. DESIGN AND METHODS: Our study was cross-sectional and its population comprised 100 FSWs from Nuevo Laredo (US border) and 100 FSWs from Ciudad Hidalgo (Guatemalan border). The main outcome was primary place of sex work defined as unstable (street, vehicle, gas station, etc.) vs stable (bar, brothel, and hotel). Logistic regression was used to identify correlates associated with trading sex at unstable workplaces in the last month. RESULTS: Of the FSW surveyed, 18% reported an unstable workplace. The majority of FSW surveyed were young (<30), single, had <9th grade education, and had worked in the sex trade for a median of 4.9 years. After controlling for study site, FSW with unstable vs. stable workplaces were more likely to have a majority/all truck driver clientele, but were less likely to have visited a gynecologist in the last year (OR 0.1, 95%CI 0.03-0.4) or ever had an HIV test (OR 0.1, 95%CI 0.06-0.3), and there was a trend towards lower condom use self-efficacy scores (OR 0.8 per unit increase, 95%CI 0.7-1.0). On multivariate regression, unstable workplace was associated with having majority/all truck driver clientele, being surveyed in Nuevo Laredo, and decreased odds of ever having an HIV test. CONCLUSIONS: Among Mexican FSW with truck driver clients, providing safe indoor spaces for sex work may help facilitate public health interventions that improve HIV/STI and reproductive health outcomes.

Human papillomavirus incidence and risk factors among Mexican female college students.

OBJECTIVE: To determine the factors associated with high-risk human papillomavirus (HR-HPV) and its incidence in a cohort of female college students, with particular emphasis on the use of condoms. METHODS: A cohort was created during 2001 to 2005. The students signed informed consent, answered a questionnaire, and provided a vaginal scrape to detect HR-HPV. Incidences were estimated and risk factors were evaluated using Cox proportional risk model. The variable condom use was constructed based on the following 3 measurements: relative frequency throughout one's lifetime, use during the first sexual relationship, and use during the last sexual relationship. RESULTS: A total of 237 women participated, providing 395.6 person-years of follow-up. An incidence of 15.9 HR-HPV infection per 100 person-years was estimated and the factors associated with HR-HPV infection were found to be self-reported sexually transmitted infections (RR = 2.7), use of emergency contraception pill (ECP) (RR = 2.0), and having 2 or more sexual partners (RR = 1.9). University students using the ECP demonstrated more risky sexual behavior than nonusers. Women with 2 or more sexual partners who reported inconsistent condom use had 3.8 times the rate of HR-HPV infection. CONCLUSIONS: The incidence for HR-HPV in this cohort of Mexican female college students is comparable to that found in the United States and Canada. The results suggest that the consistent use of condoms is a protective factor against HR-HPV, especially for women with multiple sexual partners and/or those who use the ECP.

CD3zeta expression and T cell proliferation are inhibited by TGF-beta1 and IL-10 in cervical cancer patients.

INTRODUCTION: Cervical cancer development from a squamous intraepithelial lesion is thought to be favored by an impaired T cell immunity. We evaluated parameters of T cell alterations such as proliferation, cytokine, and CD3zeta expression in peripheral blood and tumor-infiltrating T lymphocytes from women with squamous intraepithelial lesions (SIL) or cervical cancer (CC). RESULTS AND DISCUSSION: T cell proliferation and cytokine messenger RNA (mRNA) expression were similar in women with SIL and healthy donors, whereas low T cell proliferation and lower mRNA expression of IL-2, IL-10 and IFN-gamma were observed in women with CC. Moreover, infiltrating cells showed marginal responses. We also found that CD3zeta mRNA expression, whose protein is required for T cell activation, correlated with a decreased proliferation in advanced stages of the disease. CONCLUSION: Experiments with T cells from healthy donors in the presence TGF-beta1 or IL-10 suggest that these cytokines have a relevant role in T cell responses during CC progression.

Different patterns of herpes simplex virus type 1 infection among college students from Cuernavaca, Mexico.

The goal of this study was to determine herpes simplex virus type 1 (HSV-1) seroprevalence among college students from Morelos State University, Mexico; and to correlate their demographic and sexual behaviour characteristics with HSV-1 infection. Demographic characteristics were associated with HSV-1 among female students. Among male students, sexual behaviour characteristics were associated with HSV-1 seroprevalence. Male students who practised oral sex and did not always use a condom presented higher rates of HSV-1 infection (76.9%) than students who did not have oral sex (52.2%). A different pattern of HSV-1 infection depends on gender among Mexican students analysed.