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Investigación sobre epidemiología convencional y molecular de tuberculosis en Orizaba, Veracruz, 1995-2008
Jiménez-Corona,Ma Eugenia; García-García,Lourdes; León,Alfredo Ponce de; Bobadilla-del Valle,Miriam; Torres,Martha; Canizales-Quintero,Sergio; Palacios-Merino,Carmen; Molina-Hernández,Susana; Martínez-Gamboa,Rosa Areli; Juárez-Sandino,Luis; Cano-Arellano,Bulmaro; Ferreyra-Reyes,Leticia; Cruz-Hervert,Luis Pablo; Báez-Salda?a,Renata; Ferreira-Guerrero,Elizabeth; Sada,Eduardo; Marquina,Brenda; Sifuentes-Osornio,José;
Salud Pública de México , 2009, DOI: 10.1590/S0036-36342009000900013
Abstract: this study describes the achievements of the mexican consortium against tuberculosis, in the sanitary district of orizaba, veracruz, mexico between 1995 and 2008. in brief, the main results can be classified as follows: 1) conventional and molecular epidemiology (measurement of burden of disease, trends, risk factors and vulnerable groups, consequences of drug resistance, identification of factors that favor nosocomial and community transmission); 2) development of diagnostic techniques to detect drug resistance, description of circulating clones and adaptation of simple techniques to be used in the field; 3) evaluation of usefulness of tuberculin skin test, immunologic responses to bcg, impact of directly observed therapy for tuberculosis (dots), and study of immunological biomarkers and 4) comments on ethical aspects of tuberculosis research. additionally, we describe the impact on public policies, transference of technology, capacity building and future perspectives.
The Influence of Meteorology and Atmospheric Transport Patterns on the Sulfate Levels in Raiwater in Orizaba Valley, Veracruz, Mexico  [PDF]
Rosa María Cerón Bretón, Jonathan Kahl, Julia Griselda Cerón Bretón, José Angel Solís Canul
Journal of Environmental Protection (JEP) , 2019, DOI: 10.4236/jep.2019.106049
Abstract: This work assessed the relationship between synoptic circulation patterns, meteorological conditions and sulfate levels in rainwater in Orizaba Valley, Veracruz, Mexico during 2015. Samples were collected by using an automatic deposition sampler considering three climatic periods: Cold fronts or Nortes, Dry and Rainy seasons. Sulfate in rainwater was determined by turbidimetry (NMX-AA-SCFI-074-1981). A backward trajectory model (HYSPLIT) was used to characterize the potential source regions and transport pathways for air parcels arriving to Orizaba Valley; trajectories extended five days during 2015 were calculated. Mean concentrations of sulfate were 105.33, 37.5, and 52.5 μEq·l-1, for Cold Fronts, Dry and Rainy seasons, respectively. An evident dilution pattern was observed with lower concentration levels when rainfall increased. Mean values for sulfate concentration exceeded the background hemispheric value reported by Galloway et al. (1982) for remote sites (10 μEq·l-1), exceeding almost 10, 3.7 and 5.2 times, during the Nortes, Rainy and Dry seasons, respectively. From the obtained results, it was concluded that the high sulfate levels in the rainwater measured in Orizaba Valley had their origin in different upwind regional sources as a result of long-range transport during Rainy and Nortes seasons.
Prevalencia de seropositividad para VIH, hepatitis B y C en donadores de sangre
Rivera-López, María Rebeca F.;Zavala-Méndez, Celia;Arenas-Esqueda, Alfonso;
Gaceta médica de México , 2004,
Abstract: despite utilizing different actions to render blood safe for transfusions, we continue to have the risk of transmitting some viral infections. for this reason, it is important to determine prevalence of infections due to hiv and hepatitis b and hepatitis c viruses in blood donors. previous studies from méxico indicate that hiv prevalence is 0.01 to 0.13%, while it is 0.11 to 1.22% for hepatitis b, and for hepatitis c, prevalence is 0.47 to 1.47%. we are checking the results of the screening tests (elisa 3rd generation and chemiluminescent immunoassays) from blood donors studied at the central blood bank (banco central de sangre) at the mexican institute of social security's (imss) twentieth first century national medical center in mexico city from 1995 to 2002. reactive results were studied by confirmatory tests, western blot for hiv, aghbs neutralization test for hepatitis b, and riba-hcv 3.0 for hepatitis c reactive results from 513,062 blood donors confirmed for hiv were 0.07%, reactive results and confirmation of hepatitis b from 511,733 blood donors were 0.13%, and reactive results and confirmation of hepatitis c from 511,115 blood donors were 0.31%. rates obtained are low when compared with results of previous studies in mexico for hiv, hepatitis b, and hepatitis c. it may be possible than these low rates indicate the positive impact obtained from preventive actions, better strategies of detection of blood donors with high risk, and the advantage of working with a fully automated test system with state-of-the-art technology.
Incidencia de gliomas malignos en derechohabientes del IMSS residentes en el estado de Veracruz, México
GUEVARA DONDE, JAIME E;
Archivos de neurociencias (México, D.F.) , 2004,
Abstract: objetive: confirm if as in the develop my countries exists an increment in the incidence and mortality by malignant glioma in elderly patients over 60 years old residents in the veracruz state. material and method: 151 patients were studied, ages (0-80 years old), with confirmed diagnosis of cerebral glioma, seen in the last years. they were divided in benign and malignant gliomas by age and sex groups. the annual incidence average (x10) was estimated taking a sample of the crowd by the statistic, geographic and incidence national institute denominators. finally we analyzed the mortality frequency by groups and malignancy tumor grade. result: the benign gliomas occurs in the 70% of the patients under 20 years old, frequently located in the posterior fosse. on the other hand the 87.5% of the patiens over 61 years old have supratentorial location malignant gliomas. the incidence showed a minimum increment going of 0.15 to 0.19 in this patients with a 50% mortality. conclusion: we observed a minimum increment in the incidence and mortality by malignant gliomas in people over 61 years old from the veracruz state. the quick and highest covers or medical attention hand a determinant statistic influencen the results.
Prevalencia de hepatitis B y C en donadores de sangre en un hospital de tercer nivel de la ciudad de México  [cached]
Méndez-Sánchez Nahum,Baptista-González Héctor,Sánchez-Gómez Raúl Hiramm,Bordes-Aznar Javier
Salud Pública de México , 1999,
Abstract: OBJETIVO: Determinar la prevalencia del virus de la hepatitis C (VHC) y de la B (VHB) en donadores que acudieron al Banco de Sangre del hospital Médica Sur. MATERIAL Y MéTODOS: Se incluyeron en el estudio 9 099 donadores, registrados entre 1994 y 1998. Se les aplicó un cuestionario y se determinó VHC y VHB. Se obtuvieron porcentajes y se analizaron los resultados por medio de la prueba ji2. RESULTADOS: La prevalencia de portadores de VHC y VHB fue de 0.47 y 0.11%, respectivamente. Los factores de riesgo más importantes para VHC y VHB fueron los procedimientos dentales (11.6%) y (20%); respectivamente; y 20% por prácticas sexuales riesgosas como factor de riesgo para VHB. CONCLUSIONES: Los resultados sugieren una baja prevalencia de la infección por VHC y VHB en la población estudiada.
Cardiopatía chagásica crónica en el Hospital General de Zona N° 24 IMSS. Poza Rica, Veracruz
Olivera-Mar, Amonarlo;Hernández-Vicencio, Catalina;Camacho-Marie, Margarita;Hernández-Becerril, Nidia;Monteón-Padilla, Víctor M;Vallejo, Maite;Reyes, Pedro A;
Archivos de cardiología de México , 2006,
Abstract: northern veracruz has conditions, biotic and abiotic, to support triatomine bugs and vectorial transmission of trypanosoma cruzi to human beings. therefore we explore seroprevalence of antibodies to this parasite and the presence of chronic chagasic cardiopathy (ccc) at cardiology ward in a general hospital serving north of veracruz state, and neighbord states hidalgo, puebla san luis potosí and tamaulipas. material and methods: we search for consecutive adult patients attending outpatient and beds assigned to cardiology between march through september, 2003. an epidemiology questionnaire, clinical work up, chest roentgenogram, 12 lead peripheral ekg and transthoracic echocardiogram were performed in 240 female/males patients. all of them were bled to blindly search for t. cruzi antibodies. results: seroprevalence was 8%, 49 cases of dilated cardiomyopathy were diagnosed 23 attributed to chronic diseases such as systemic hypertension diabetes mellitus or ischemic heart disease 12 with idiopathic disease and 14 (29%) had ccc. the latter accumulated epidemiologic features suggestive of vectorial infection. four additional individuals without ccc but having specific antibodies were considered indeterminate chagasic cases. discussion and conclusions: this case series identify american trypanosomiasis among 19 people attending a cardiology service, and 14 of them had a severe heart disease linked to progressive and fatal course. this observation points out that chagas disease could be a regional public health problem in northern veracruz.
Seroprevalencia de VHB, VHC y VIH en donadores de sangre en Irapuato, México
Carreto-Vélez,Miguel Angel; Carrada-Bravo,Teodoro; Martínez-Magdaleno,Angel;
Salud Pública de México , 2003, DOI: 10.1590/S0036-36342003001100015
Abstract: objective: to investigate the seroprevalence of viral markers for the human immunodeficiency virus (hiv), and the hepatitis b (hbv) and c (hcv) viruses, in blood donors at the general hospital no. 2 family medicine unit, of the mexican social security institute in irapuato, mexico. material and methods: a cross-sectional descriptive study. data was recorded on blood bank forms, and risk factors and illnesses were studied in the 7,056 blood donors at the general hospital no. 2 family medicine unit, of the mexican social security institute in irapuato, guanajuato, mexico, over a period of two years (from july 1998 to june 2000). a sample of 4,010 donors was obtained, each of whom underwent serological tests for hbv, hcv and hiv, serotypes 1 and 2, using an enzymatic immunoassay of third generation in serum or human plasma; seroprevalence rate of seropositive donors was calculated and stratified by age and sex. results: the combined seroprevalence for hbv, hcv and hiv was 2.5% (101); hcv was 1.14% (46), hbv, 1.12% (45), and hiv, 0.24% (10). in males, hbv was 1.04% (33), hcv 1.07% (34), and hiv, 0.28% (9). in females, hbv was 1.42% (12), hcv was 1.42% (12), and hiv was 0.11% (1). seropositive males had a 2.4 higher rate as compared to females. conclusions: the seroprevalence of viral markers was greater than that reported in previous studies carried out in mexico, which suggests that sexual transmission was the principal mechanism of infection; this reflects poor health education and the need to carefully select potential donors.
Obesity and overweight in IMSS female workers in Mexico City
Vázquez-Martínez,José Luis; Gómez-Dantés,Héctor; Gómez-García,Felipe; Lara-Rodríguez,María de los Angeles; Navarrete-Espinosa,Joel; Pérez-Pérez,Gabriela;
Salud Pública de México , 2005, DOI: 10.1590/S0036-36342005000400003
Abstract: objective: to estimate the prevalence and risk factors for overweight (ow) and obesity (ob) in women working at the mexican social security institute (imss, per its abbreviation in spanish) in mexico city, using two different classification criteria. material and methods: a cross-sectional study was performed from july 1999 to september 2000. it included 588 women 20 to 65 years of age and who were working at the imss. the criteria used to estimate the prevalence of ow and ob were the who criteria and the mexican official norm (nom) for the integrated management of obesity in mexico. results: the frequency of ob, according to who criteria, was 27.6% (26% adjusted) and for ow 43.2% (40.2% adjusted). according to the nom, the levels of ob in those with short height (<1.50 m) increased to 75% and to 52.2% for those with height >1.50 m. comparison of bmi between the two height groups showed no differences. the risk factor associated with ob and ow was age. education and exercise were protective factors. conclusions: the high prevalences detected in this particular working group highlight the importance of prevention and control of ob in health personnel because it can result in a high number of disability and premature retirement due to disease. the use of the nom criteria for the identification of women at risk may be useful for early detection of high-risk groups.
Determinantes de violencia de pareja en trabajadoras del IMSS morelos
Ortega-Ceballos,Paola Adanari; Mudgal,Jyoti; Flores,Yvonne; Rivera-Rivera,Leonor; Díaz-Montiel,Juan Carlos; Salmerón,Jorge;
Salud Pública de México , 2007, DOI: 10.1590/S0036-36342007000500006
Abstract: objective: to study the prevalence of partner violence, and to identify the associated risk factors in a sample of female workers of imss (mexican social security institute), morelos state. material and methods: cross-sectional data from 1 173 women participating in the cohort study of imss workers are utilized to study these associations. the study provides information on frequency of psychological, physical or sexual violence and perception of severity during the 12 months prior to the time of data collection. it was carried out in morelos between october 1998 and march 2000. polytomous logistic regression models were used to obtain odds ratios for different degrees of partner violence. results: a high prevalence of partner violence is observed in the sample. main factors associated with higher severity of violence are state of the relationship and alcohol intake, emotional status of the couple at home, work burden of the woman, and a history of violence in childhood. conclusions: all these factors are potentially modifiable through interventions aimed at stress reduction. these results should be considered when developing preventive programs against partner violence in mexico.
Distribución heterogénea de la prevalencia de anticuerpos contra Trypanosoma cruzi en donadores de sangre en Puebla, México
Monteón,Víctor M; Reyes-López,Pedro A; Sosa-Palacio,Adalid; León-Tello,Gloria; Martínez-Murguía,Jaime; Sosa-Jurado,Francisca;
Salud Pública de México , 2005, DOI: 10.1590/S0036-36342005000200005
Abstract: objective: to determine the seroprevalence and associated factors, of antibodies against trypanosoma cruzi (t. cruzi ab) among blood donors living in rural and suburban areas and risk regions. material and methods: a cross-sectional study was conducted from january to december 2003, in 2489 blood donors of seven regions of puebla, who were evaluated for mandatory viral and t. cruzi serological tests using validated procedures results: the seroprevalence for t. cruzi ab was 1.24% (31/2489), similar to hepatitis c (hvc) (1.5%) and higher than human immunodeficiency virus (hiv) (0.4%) and hepatitis b (hvb) (0.3%). the highest seroprevalences were observed in the regions of tehuacan-sierra negra and mixteca, up to 2.6%, while in sierra nororiental and angelopolis no positive blood donors were identified. a positive association was observed between seropositivity and being older than forty years and being born and raised in tehuacan-sierra negra and mixteca. conclusions: t.cruzi seroprevalence distribution is heterogeneous, from 0% to 2.6%, with higher seroprevalences in the regions of tehuacan-sierra negra and mixteca.
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