RESUMEN
Haemophilus influenzae tipo b es un importante patógeno del hombre causante de varias de las enfermedades invasivas en niños menores de cinco años, contra el cual fueron autorizadas las vacunas glicoconjugadas a partir del polirribosilribitol fosfato. Quimi-Hib® es la primera y única vacuna contra este patógeno que utiliza el polisacárido obtenido por síntesis química. El Ingrediente Farmacéutico Activo es producido por el Centro de Ingeniería Genética y Biotecnología y se obtiene a partir de su conjugación al toxoide tetánico. En el presente reporte se hizo una caracterización del polirribosilribitol fosfato mediante la técnica de cromatografía de exclusión molecular de alta eficacia con detección ultravioleta a 215 nm. En el estudio se evaluaron tres lotes y se determinó el perfil de elución en una columna SuperdexTM 75 10/300 GL Increase con un porciento de pureza de 77,42 ± 8,97 y una masa molar promedio de 7.381 Da ± 210,93. La principal impureza presente en el polirribosilribitol fosfato es el dimetilsulfóxido, disolvente utilizado en la reacción de activación con el éster N-hidroxisuccinimidilo del ácido β-maleimidopropiónico. El polirribosilribitol fosfato se purificó por filtración con un Amicon Ultra-15 de 2.000 Da hasta una pureza de 99,1 por ciento y se conjugó al toxoide tetánico. El rendimiento de la reacción de conjugación con el polisacárido purificado fue de 30,0 por ciento 1,77 el cual no muestra diferencias significativas con el control que fue 33,7 por ciento ± 3,57 demostrándose que el dimetilsulfóxido no afecta el desempeño de la reacción de conjugación(AU)
Haemophilus influenzae type b is an important human pathogen causing some invasive diseases in children less than five years of age. Glycoconjugate vaccines based on polyribosylribitol phosphate have been licensed against this bacterium. Quimi-Hib® is the first and only vaccine against this pathogen using the chemically synthesized polysaccharide. The Active Pharmaceutical Ingredient is produced by the Center for Genetic Engineering and Biotechnology and is obtained from its conjugation to tetanus toxoid. In the present report a characterization of polyribosylribitol phosphate was performed by high performance molecular exclusion chromatography with ultraviolet detection at 215 nm. Three batches were evaluated in the study and the elution profile was determined on a SuperdexTM 75 10/300 GL Increase column with a purity percentage of 77.42 ± 8.97 and an average molecular weight of 7,381 Da ± 210.93. The main impurity present in polyribosylribitol phosphate was dimethylsulfoxide, the solvent used in the activation reaction with N-hydroxysuccinimidyl ester of β-maleimidopropionic acid. Polyribosylribitol phosphate was purified by filtration using a 2,000 Da cut-off Amicon Ultra-15 to a purity of 99.1 percent and conjugated to tetanus toxoid. The yield of the conjugation reaction with the purified polysaccharide was 30.0 percent ± 1.77 which shows no significant difference with the control which was 33.7 percent ± 3.57 demonstrating that dimethylsulfoxide does not affect the performance of the conjugation reaction(AU)
Asunto(s)
Humanos , Masculino , Femenino , Recién Nacido , Lactante , Preescolar , Polisacáridos , Cromatografía en Gel/métodos , Vacunas Conjugadas/uso terapéutico , Medicamentos de Referencia , Infecciones por Haemophilus/epidemiología , Toxoide Tetánico/uso terapéuticoRESUMEN
Introdução: O tétano acidental é definido como uma doença não contagiosa e prevenível com vacinação, decorrente da ação de exotoxinas do Clostridium tetani, desencadeando um estado de hiperexcitabilidade do sistema nervoso central, em pacientes não neonatais. O número de casos no país está reduzindo; contudo, a mortalidade é elevada. Dessa forma, o presente estudo objetivou avaliar o perfil e a tendência temporal da ocorrência de tétano acidental no estado de Santa Catarina, no período de 2008 a 2018. Métodos: Estudo observacional do tipo ecológico com a população do estado de Santa Catarina, sendo excluídos os residentes com idade de 0 a 4 anos. O número de notificações e as variáveis clínico-epidemiológicas foram extraídos da base de dados da Diretoria de Vigilância Epidemiológica do estado de Santa Catarina (DIVE) e do Departamento de Informática do Sistema Único de Saúde (DATASUS). Resultados: Observou-se uma maior ocorrência do tétano acidental em homens; faixa etária entre os 50 e 64 anos; residentes de zonas urbanas. O principal desfecho foi a cura. Notou-se uma correlação significativa (p<0,05) para a redução da incidência de casos nos seguintes grupos: sexo feminino e idosos a partir dos 80 anos. Conclusão: Denota-se que, apesar de possuir uma forma simples de profilaxia, o tétano acidental persiste como um problema de saúde pública e, portanto, deve-se investir em estratégias para aumentar a cobertura vacinal, em especial, nos grupos de maior incidência.
Introduction: Accidental tetanus is defined as a non-communicable disease preventable by vaccination; it is caused by exotoxins produced by Clostridium tetani, triggering a state of central nervous system hyperexcitability in non-neonatal patients. The number of cases in the country is decreasing, but mortality rates are high. This study thus aimed to evaluate the profile and temporal trend of the occurrence of accidental tetanus in the state of Santa Catarina between 2008 and 2018. Methods: This is an observational ecological study performed with the population of the state of Santa Catarina, excluding residents aged 4 years or less. The number of reported cases and clinical and epidemiological variables were extracted from databases of the Epidemiological Surveillance Department of the State of Santa Catarina (DIVE) and the Informatics Department of the Unified Health System (DATASUS). Results: We observed a higher occurrence of accidental tetanus among men, people aged between 50 and 64 years, and individuals living in urban areas. The main outcome observed in this study was cure. We noticed a significant correlation (p<0.05) for a reduction in cases among the following groups: women and older adults aged 80 years or older. Conclusion: Despite its simple prophylaxis, accidental tetanus remains a public health problem; investments should thus be made in strategies that increase vaccination coverage, especially considering groups with higher incidence rates.
RESUMEN
Objective:To analyze the immune effect of tetanus toxoid (TT) and to provide reference for improving immunoprophylaxis strategies against tetanus.Methods:From 2019 to 2021, the TT-containing vaccine (TTCV) immunization history of patients treated for trauma in Luoshan Street Community Health Service Center of Jinjiang City were investigated. Serum tetanus antibody (TAB) levels were detected in 353 subjects (group A) 5-10 years after TTCV immunization, and the proportions of subjects with different TAB levels (<0.01 IU/ml, 0.01-0.10 IU/ml, >0.10 IU/ml) in different age groups were compared. Sixty-eight subjects (group B) aged 14-83 years with TTCV immunization history and TAB level of 0.01-0.10 IU/ml and 133 subjects (group C) aged 17-77 years without TTCV immunization history were inoculated with one dose and three doses of TT respectively, and the changes in TAB level were observed 28 d after immunization.Results:In group A, the proportions of subjects with different TAB levels in different age groups were statistically significant (χ 2=47.69, P<0.001). The proportions of subjects in which TAB levels were <0.01 IU/ml and 0.01-0.10 IU/ml increased with age. In group B, 66 out of the 68 subjects had TAB >0.10 IU/ml 28 d after one dose of TT immunization. There were statistically significant differences in the proportions of subjects whose TAB levels were 0.01-0.10 IU/ml and >0.10 IU/ml before and after TT immunization (χ 2=128.23, P<0.001). In group C, before three doses of TT immunization, 129 patients had TAB <0.01 IU/ml and four patients had TAB in the range of 0.01-0.10 IU/ml; 28 d after three doses of TT immunization, only one case had TAB in the range of 0.01-0.10 IU/ml and 132 cases had TAB >0.10 IU/ml. The proportions of group C subjects with different TAB levels before and after TT immunization were statistically significant (χ 2=262.80, P<0.001). Conclusions:Five years after TTCV immunization, the proportions of individuals with TAB <0.01 IU/ml and in the range of 0.01-0.10 IU/ml increased with age. For people without TTCV immunization history and those with decreased TAB protection after TTCV immunization, strengthening TT immunization could significantly improve the TAB protection.
RESUMEN
RESUMEN Fundamento: El tétanos es una enfermedad infecciosa causada por las esporas de la bacteria Clostridium tetani que afecta el sistema nervioso. La inmunización contra esta enfermedad ha permitido reducir la morbilidad y la mortalidad en Cuba por esa causa. Los pocos casos reportados son pacientes sin previa vacunación contra el tétanos, por lo que constituye de interés para la comunidad científica el reporte de aquellos que desarrollan esa enfermedad después de haber sido vacunados. Objetivo: Describir el caso de un paciente con diagnóstico de tétanos generalizado a pesar de que ya había sido vacunado contra esa enfermedad. Presentación del caso: Paciente de 33 años, con el antecedente de haber sido vacunado contra el tétanos, al cual le diagnosticaron tétanos generalizado, por lo se decidió su ingresó en la unidad de cuidados intensivos. Clínicamente se manifestó por contracciones musculares generalizadas y rigidez, los síntomas y signos neurológicos tuvieron una duración de 4 semanas. A pesar de las complicaciones el paciente egresó con adecuada calidad de vida. Conclusiones: La presentación de este caso busca concientizar en la comunidad científica la importancia de considerar el diagnóstico de tétanos en pacientes ya vacunados, lo cual es poco frecuente y obliga a actuar con prontitud.
ABSTRACT Background: Tetanus is an infectious disease caused by the bacterium Clostridium tetani spores which affects the nervous system. In Cuba, immunization against this disease has made it possible to reduce morbidity and mortality from this cause. The few cases reported are patients without prior vaccination against tetanus, so is the interest to the scientific community the reporting of those who develop this disease after having been vaccinated. Objective: To describe a patient´s case with a generalized tetanus diagnosis despite has already been vaccinated against this disease. Case report: A 33-year-old patient, with a history of has been vaccinated against tetanus, and diagnosed with generalized tetanus, so it was decided he to be admitted to the intensive care unit. Clinically manifested by generalized muscle contractions and stiffness, the neurological symptoms and signs lasted 4 weeks. Despite the complications, the patient discharged from hospital with an adequate life quality. Conclusions: This case presentation searches for raising awareness in the scientific community about the importance of considering the diagnosis of tetanus in previous vaccinated patients, which is rare and requires quickness of action.
Asunto(s)
Tétanos/diagnóstico , Toxoide Tetánico , Clostridium tetaniRESUMEN
The situation of prevention of non-neonatal tetanus in China is severe. Strengthening the active immunization with tetanus toxoid vaccine (TTCV) is the key to prevent the non-neonatal tetanus. Through the detection of tetanus antibody (TAB), the immune status of individual can be determined, so as to implement the active immunization of TTCV correctly. The research on TAB detection technology is stagnant in aboard, but still in a development process in China since there is a realistic demand for TAB detection. This review collects relatively limited data of TAB detection technology in China, and summarizes the techniques such as mice toxin neutralization test (MTNT), indirect hemagglutination assay (IHA), double agar gel immune diffusion test (Rubin method), enzyme-linked immunosorbent assay (ELISA) and colloidal gold (CG), in order to provide a comprehensive basis for domestic TAB detection. The TAB detection technology in China has not yet achieved international recognition due to the lack of comparative study of domestic and international institutions and reference reagents. The special domestic situation of tetanus prevention makes the research of TAB detection technology have a certain practical significance, and rapid detection reagents such as ELISA and CG method have a certain application value in China.
RESUMEN
The situation of prevention of non-neonatal tetanus in China is severe. Strengthening the active immunization with tetanus toxoid vaccine (TTCV) is the key to prevent the non-neonatal tetanus. Through the detection of tetanus antibody (TAB), the immune status of individual can be determined, so as to implement the active immunization of TTCV correctly. The research on TAB detection technology is stagnant in aboard, but still in a development process in China since there is a realistic demand for TAB detection. This review collects relatively limited data of TAB detection technology in China, and summarizes the techniques such as mice toxin neutralization test (MTNT), indirect hemagglutination assay (IHA), double agar gel immune diffusion test (Rubin method), enzyme-linked immunosorbent assay (ELISA) and colloidal gold (CG), in order to provide a comprehensive basis for domestic TAB detection. The TAB detection technology in China has not yet achieved international recognition due to the lack of comparative study of domestic and international institutions and reference reagents. The special domestic situation of tetanus prevention makes the research of TAB detection technology have a certain practical significance, and rapid detection reagents such as ELISA and CG method have a certain application value in China.
RESUMEN
Neonatal tetanus has been basically eliminated in China, but the incidence of non-neonatal tetanus is still high. Tetanus after trauma is the main type of non-neonatal tetanus. The correct application of tetanus toxoid containing vaccine (TTCV) has been neglected in the prevention of tetanus after trauma in China. On May 9, 2019, National Advisory Committee of Experts on Immunization Planning (NIAC) reviewed and approved the first guidelines for the use of TTCV and passive immune preparation after trauma, which clarified the basic process of treatment of tetanus after trauma, as well as the pointer to the use of TTCV and passive immune preparation after trauma. The main measure to prevent tetanus after trauma is to use TTCV for active immunization, and to use passive immune preparation for those without TTCV immune history. Through the construction of the top-down control and prevention system of tetanus, the change of the concept of tetanus immunoprophylaxis of medical staff is promoted. Active immunization is the main measure, but passive immunization is an added measure for the prevention of tetanus after trauma, which is of great significance to reverse the mistake of prevention of tetanus in China.
RESUMEN
El toxoide tetánico es una neurotoxina modificada que induce la formación de una antitoxina protectora contra la enfermedad denominada tétanos. Este antígeno es obtenido a partir de procesos fermentativos con la bacteria anaerobia Clostridium tetani y es utilizado para la formulación de vacunas simples y combinadas inactivadas. Con el propósito de atender a las recomendaciones y regulaciones de la Organización Mundial de la Salud (OMS), el objetivo de este trabajo fue diseñar un Programa de Análisis de Peligros y Puntos Críticos de Control (HACCP) en la producción del antígeno Toxoide Tetánico, desde la recepción de la cepa certificada en el área de producción hasta el almacenamiento del toxoide tetánico purificado. Para ello, inicialmente se evaluó el cumplimiento de los prerequisitos (BPM, POES, BPL). Posteriormente, se procedió al diseño del plan HACCP mediante la ejecución de las 5 tareas preliminares y la aplicación de los 7 principios, conforme a la metodología descrita por la OMS. A partir del análisis de peligros en todas las etapas del proceso de producción del toxoide tetánico se identificaron 3 puntos críticos de control: detoxificación, filtración estéril final y almacenamiento de toxoide tetánico purificado. Se establecieron los límites críticos, los procedimientos de vigilancia, las acciones correctivas, los procedimientos de verificación y de documentación. La propuesta tiene como fin garantizar la calidad e inocuidad del producto elaborado, la protección del personal involucrado en el proceso y del medio ambiente con miras a la obtención de la certificación como laboratorio productor de vacunas
Tetanus toxoid is a modified neurotoxin that induces the formation of protective antitoxin of the disease called tetanus. This antigen is obtained from fermentation processes with anaerobic bacteria Clostridium tetani and it is used to formulate simple and combined inactivated vaccines. In order to meet the recommendations and regulations of World Health Organization (WHO), the aim of this work was to design a Program of Hazard Analysis and Critical Control Points (HACCP) in the production of antigen Tetanus Toxoid, starting from the receipt of the certified strain in the production area through the storage of purified tetanus toxoid. For this, initially fulfilling the prerequisites (GMP, SSOP and GLP) was evaluated. Subsequently, we proceeded to design HACCP plan by running 5 preliminary tasks and application of the 7 principles, according to the methodology described by WHO. From the hazard analysis at all stages of the production process of tetanus toxoid three critical control points were identified: detoxification, final sterile filtration and storage of purified tetanus toxoid. Critical limits, monitoring procedures, corrective actions, verification and documentation procedures were established. The proposal aims to assure the quality and safety of the final product, the protection of personnel involved in the process and the environment, with a view to obtaining certification as a vaccine production laboratory
Asunto(s)
Humanos , Masculino , Femenino , Tétanos , Antitoxinas , Toxoide Tetánico , Vacunas , Análisis de Peligros y Puntos de Control Críticos/métodos , Antígenos , Salud Pública , NeurotoxinasRESUMEN
Objective To investigate the effects of different concentrations and adsorption methods of aluminum hydroxide adjuvant produced by different manufacturers on the immunogenicity of the diphtheria-tetanus-acellular pertussis and inactivated poliovirus combined vaccine ( DTaP-sIPV) . Methods Five anti-gens of DTaP were adsorbed onto different concentrations (0. 42 mg/ml, 0. 47 mg/ml and 0. 52 mg/ml) of aluminum hydroxide from different manufacturers through sequential and separate adsorption. Adsorbability, anti-pertussis toxin ( PT)/filamentous hemagglutinin ( FHA)/pertactin ( PRN)/diphtheria toxoid ( DT)/tet-anus toxoid ( TT) antibodies and the potency of vaccines were detected. Results The adsorbability of alu-minum hydroxide adjuvant slightly decreased with the reduction of concentration. No significant difference in potency and antibody level was observed between sequential and separate adsorption. Moreover, no signifi-cant difference in antibody level was observed between vaccines prepared with aluminum hydroxide adjuvant produced by General Chemical Corp and our institute. Conclusion Aluminum hydroxide adjuvant produced by our institute at the concentration of 0. 52 mg/ml and separate adsorption method are suitable for prepara-tion of DTaP-sIPV.
RESUMEN
OBJECTIVES: Vaccinations against diphtheria and tetanus are essential in providing immunity against these bacterial infections. The potency of diphtheria and tetanus toxoid vaccines can be measured using the in vivo toxin neutralization assay. The limit of potency of this assay was determined only for children. Therefore, we assessed the potency of adult vaccines using this assay to identify the feasibility of limit for adult vaccines. METHODS: Fifteen lots of tetanus-reduced diphtheria and tetanus-diphtheria-acellular pertussis vaccines were used. In vivo toxin neutralization and lethal challenge assays were conducted on each vaccine to calculate the potencies of the toxoids. National reference standards for toxins and antitoxins were used for in vivo toxin neutralization assay. RESULTS: All 15 lots satisfied the limits of potency for lethal challenge assay. The potency of diphtheria and tetanus toxoids exceeded 1 and 8 units/mL, respectively, for in vivo toxin neutralization assay. CONCLUSION: Although additional studies are required for new assays and limits, the current level of potency for adult vaccines as determined by in vivo toxin neutralization assay, was demonstrated in this study. Such efforts to improve assays are expected to promote the development of diphtheria and tetanus vaccines for adults and to contribute to vaccine self-sufficiency.
Asunto(s)
Adulto , Niño , Humanos , Antitoxinas , Infecciones Bacterianas , Toxoide Diftérico , Difteria , Toxoide Tetánico , Tétanos , Toxoides , Vacunación , Vacunas , Tos FerinaRESUMEN
Tetanus is an acute specific infection caused by obligate anaerobes, which is still a serious public health problem. Tetanus bacterium is an obligate anaerobic bacterium, widely distributed in nature, which can exist in dust, soil, human or animal excrement. The bacteria invade the body primarily through the skin or mucosal wounds, and most commonly in trauma and burn patients, unclean newborns, and unsafe surgical instruments. Exotoxin produced by tetanus bacteria can cause temporary changes in the central nervous system, manifested as systemic skeletal muscle persistence and paroxysmal spasm, severe cases of laryngospasm, asphyxia, lung infections and organ failure, which is a very serious and potentially fatal disease. This article is an expert consensus on the tetanus immunologic defense, aiming to aid the clinical decision making after open injury. According to epidemiological investigation of tetanus, types of injured population, wound exposure and misunderstandings of immunologic defense, the key measures to prevent tetanus are good wound management and immunization. This statement describes a preventive framework of tetanus immunization, including the tetanus immunization programs of infants, pregnant women, potentially high-risk population, immunodeficiency patients and children born to HIV-infected mothers. This consensus only provides academic guidance, the treatment of the patient must be based on the prevailing medical conditions.
RESUMEN
Tetanus is an acute specific infection caused by obligate anaerobes, which is still a serious public health problem. Tetanus bacterium is an obligate anaerobic bacterium, widely distributed in nature, which can exist in dust, soil, human or animal excrement. The bacteria invade the body primarily through the skin or mucosal wounds, and most commonly in trauma and burn patients, unclean newborns, and unsafe surgical instruments. Exotoxin produced by tetanus bacteria can cause temporary changes in the central nervous system, manifested as systemic skeletal muscle persistence and paroxysmal spasm, severe cases of laryngospasm, asphyxia, lung infections and organ failure, which is a very serious and potentially fatal disease. This article is an expert consensus on the tetanus immunologic defense, aiming to aid the clinical decision making after open injury. According to epidemiological investigation of tetanus, types of injured population, wound exposure and misunderstandings of immunologic defense, the key measures to prevent tetanus are good wound management and immunization. This statement describes a preventive framework of tetanus immunization, including the tetanus immunization programs of infants, pregnant women, potentially high-risk population, immunodeficiency patients and children born to HIV-infected mothers. This consensus only provides academic guidance, the treatment of the patient must be based on the prevailing medical conditions.
RESUMEN
Tetanus is declining due to vaccination, professional labor management and appropriate wound care. Tetanus cases have been reported despite immunization. We report the case of a previously healthy 21 years old female patient that presented a mild generalized tetanus requiring admission after mild and recurrent cat scratch and bites. She had received six vaccine shots during childhood, and a booster dose five years earlier after a rabbit bite. Symptoms appeared seven weeks after the last contact, and included headache, muscle spasms and mild opisthotonus. Laboratory evaluation, including CSF analysis and microbiological investigation, as well as imaging studies were all normal. The patient received 6,000 IU of human antitoxin immunoglobulin. No autonomic manifestations or respiratory compromise were registered. Symptoms resolved rapidly and she was discharge after seven days with an order to complete a tetanus toxoid immunization schedule with three doses. Conclusions. Tetanus is possible in urban settings with a declining epidemiologic curve of disease in previously immunized patients. Severity of disease is modulated by previous vaccination.
El tétanos está en declinación gracias a la vacunación, manejo profesional del parto y el cuidado apropiado de las heridas. Se han reportado casos a pesar de la inmunización. Presentamos el caso clínico de una mujer previamente sana de 21 años que presentó un tétanos generalizado leve, luego de repetidas mordeduras y arañazos de su gato. Había recibido su esquema completo de seis dosis de vacuna antitetánica en la infancia y un refuerzo hacía cinco años luego de una mordedura por conejo. Los síntomas aparecieron siete semanas después del último contacto e incluyeron cefalea, espasmos musculares y opistótonos leve. La evaluación de laboratorio, incluyendo un estudio del LCR e imágenes fueron normales. La paciente recibió inmunoglobulina humana antitetánica. No hubo manifestaciones autonómicas ni compromiso respiratorio. Los síntomas regresaron rápidamente y se dio de alta a los siete días con indicación de completar tres dosis de vacuna antitetánica. Conclusiones: El tétanos es posible en ambientes urbanos con una curva epidemiológica en descenso en pacientes previamente inmunizados. La gravedad del cuadro es modulada por la vacunación previa.
Asunto(s)
Humanos , Animales , Femenino , Adulto Joven , Tétanos/etiología , Mordeduras y Picaduras/complicaciones , Toxoide Tetánico/administración & dosificación , Gatos , Inmunización Pasiva , Tétanos/diagnóstico , Tétanos/tratamiento farmacológicoRESUMEN
@#<p style="text-align: justify;"><strong>OBJECTIVE:</strong> To compare the incidence of acute otitis media among children aged 2 to 6 months old in Sampaloc, Manila who were previously given 3 doses of pneumococcal conjugate vaccine (Non-Typeable Haemophilus influenzae (NTHi) protein D, diphtheria or tetanus toxoid conjugates) and those who did not receive the vaccine over a period of one year.<br /><strong>METHODS:</strong> <br /><strong>Design:</strong> Cohort Study<br /><strong>Setting:</strong> Primary Health Center in Sampaloc, Manila, Philippines<br /><strong>Participants:</strong> Medical records of well children aged 2 to 6 months were reviewed for inclusion. Participants were categorized into vaccinated and unvaccinated groups. Both groups underwent baseline history and physical examination including otoscopy and any signs and symptoms of active ear infection were noted. Subjects were followed up for a period of one year on a monthly basis for signs or symptoms of acute otitis media. <br /><strong>RESULTS:</strong> A total of 176 subjects participated in the study. The overall incidence of AOM among participants was 5.11% (9 out of 176). An AOM incidence of 3.75% (3 out of 80) and 6.25% (6 out of 96) was found among the exposed and unexposed groups, respectively. Fisher's exact test (one-tailed) p value= .34, relative risk (RR) .6 (95% Cl 0.155, 2.323).<br /><strong>CONCLUSION:</strong> The results of this study showed no difference in the development of AOM in the two groups. However, based on the relative risk, Pneumococcal conjugate vaccine is still beneficial in preventing AOM in children.</p>
Asunto(s)
Humanos , Masculino , Femenino , Lactante , Difteria , Otoscopía , InflamaciónRESUMEN
Aims: The study aimed to determine the level of awareness and status of tetanus toxoid (TT) vaccination among female undergraduates in Port Harcourt. Study Design: This was a cross sectional descriptive study carried out among female undergraduate students. Place and Duration of Study: The study was carried out in University of Port Harcourt from 1st to 31st of May 2014. Methodology: A pre-tested questionnaire was administered to 512 female students selected through a Multi-Staged sampling technique. Information sought included socio-demographics awareness of TT vaccine, knowledge of the vaccination campaign for women of childbearing age and TT vaccination status. Data was analyzed using epi info version 7.1.3.3. Results: A total of 512 students participated in the study; mean age was 22±2.79 years. Four hundred and eighty five (94.7%) and 409 (79.9%) students had heard of tetanus and TT vaccine respectively. Commonest sources of information were health workers. 33.8% knew the target population for the TT vaccination campaign and 18.2% knew that the correct number of doses of TT is 5 doses. Two hundred and ninety eight (58.2%) and 10 (2%) students had received at least 1 dose and 5 doses of TT respectively. Students who had knowledge of the target population for TT vaccination campaign (OR=2.14, p=0.003) and those who were confident in the effectiveness of TT (OR=2.41, p<0.001) were twice more likely to receive at least a dose of TT vaccine. Conclusion: There was poor knowledge of TT vaccination campaign for women of childbearing age and very poor coverage of TT5 among the female undergraduate students in Port Harcourt. Female undergraduate students should be reached during TT vaccination campaigns.
RESUMEN
Background: Tetanus toxoid immunization is given to pregnant women and women of child bearing age to prevent neonatal tetanus and maternal tetanus. The tetanus toxoid vaccine is given five times to women of child bearing age. If the vaccination is given with correct dose, through the right route of administration and completely the woman will be protected for life/ all child bearing years. It was therefore necessary to find out the tetanus toxoid coverage in such tertiary health institution where many pregnant women attend and immunization is given. Objective: To determine the tetanus toxoid coverage in the health facility. Methods: Records of the data management tools of Tetanus Toxoid (TT) immunization were checked and data collected. The data was collected from tetanus toxoid register in the immunization unit of Federal medical centre, Umuahia. Data was analyzed with Excel and Epi info. Results: The health facility summary form showed steady increase in coverage rate for TT1 and TT2 pregnant women only from 2006(33%, 28%) to 2012(64%, 50%) except 2010(37%, 29%) where it reduced. The dropout rate of TT1/TT2 ranged from 14% in 2011 to 28% in 2009. The dropout rate in 2012 was 22%. In immunization register 2006- 2009, those that competed (took TT1 to TT5) ranged from 10%-16%.However, those that started in 2010 to 2012 were not expected to have taken up to TT5 due to interval of administration Conclusion: The coverage rate of TT was low with highest coverage rate in 2012 and there was also high dropout rate. This showed that many pregnant women are still not immunized with TT and some that started did not get the second dose indicating no protection.
RESUMEN
Aims: This study was designed to verify the immunogenicity (potency) and the safety of tetanus toxoid vaccines marketed in three large open drug markets in South-Eastern Nigeria. Methodology: Tests for Sterility, formaldehyde concentrations, specific toxicity, endotoxin, and immunogenicity (potency) were conducted on three different brands of tetanus toxoids (Brand α - from Ariaria Drug Market, Aba-Abia State; Brand β - from Ogbete Drug Market, Enugu State; and Brand γ - from Bridge-Head Drug Market, Onitsha-Anambra State). Results: All vaccine brands studied passed the sterility testing, but did not comply with the 2011 BP specifications on free formaldehyde concentration, which stipulates that the free formaldehyde concentration should not exceed 0.02%. The three vaccine brands did not show specific, abnormal, or general toxicity, but contained different amounts of endotoxins. The result of the potency testing showed that the three brands were immunogenic and elicited specific antibodies against tetanus toxin; but brand γ was the most immunogenic since it elicited the highest titers of total IgG, IgG1, and IgG2a followed by brand α, and then brand β. Conclusion: Generally, the quality control tests carried out on these three commercial brands of tetanus toxoids marketed in Nigeria showed that they do not comply with all the pharmacopeial standards on quality and safety required for vaccines of this nature. Therefore, we conclude that some of the tetanus toxoids marketed in open drug markets in Nigeria are substandard and may be responsible for the failures of these vaccines used for immunization in the country.
RESUMEN
The goal of this study was to determine how much the formation of tetanus antibody is influenced after a single injection of tetanus vaccine (Td) and the simultaneous injection of tetanus vaccine with tetanus immunoglobulin (TIG). All of the healthy adult volunteers were divided into two groups: group 1 (Td only) and group 2 (Td plus TIG). Two hundred thirty seven volunteers were enrolled. When the baseline antibody titer, gender and age were adjusted, the geometric mean titers (GMTs) of the tetanus antibody (group 1 vs group 2) was 0.8438 IU/mL vs 0.5684 IU/mL at 4 weeks (P = 0.002), 0.4074 IU/mL vs 0.3217 IU/mL at 6 months (P = 0.072) and 0.3398 IU/mL vs 0.2761 IU/mL at 12 months (P = 0.140) after injection, respectively. The formation of tetanus antibody after tetanus vaccination is not influenced by TIG at the late period and in adults below the age of 50 yr, but there are significant differences between the two groups at the early period of 4 weeks after vaccination and for the patients over 60 yr.
Asunto(s)
Adulto , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Edad , Anticuerpos Antibacterianos/sangre , Inmunoglobulinas/administración & dosificación , Factores Sexuales , Tétanos/inmunología , Toxoide Tetánico/administración & dosificación , Factores de TiempoRESUMEN
OBJETIVO: Evaluar el potencial impacto epidemiológico y económico de la vacunación antitetánica en la población colombiana mayor de 15 años de edad, con dosis de refuerzo cada 10 años. MÉTODOS: Se realizó un análisis de costo-efectividad de la vacunación con refuerzo cada 10 años contra el tétanos en Colombia, comparándola con la actual estrategia (2, 4, 6, 18 y 60 meses). La carga de enfermedad se estimó con base en tres fuentes oficiales de datos. Se realizó un modelo de Markov desde la perspectiva del tercer pagador. El horizonte temporal fue el tiempo de vida de una persona. Se realizaron análisis de sensibilidad determinístico y probabilístico. RESULTADOS: En Colombia se notifican anualmente entre 30 y 48 casos de tétanos que ocasionan entre 9,6 y 10,1 muertes. Si bien la vacunación con refuerzo resultó costo-efectiva para toda la población (el costo por año de vida ajustado por discapacidad [AVAD] evitado fue de US$ 11 314 en toda la población), al discriminar los resultados por género no sería costoefectiva en las mujeres (el costo por AVAD evitado en hombres fue de US$ 4 903, y en mujeres de US$ 22 332). CONCLUSIONES: Este es el primer estudio que evalúa la costo- efectividad de una dosis de refuerzo cada 10 años de la vacuna contra el tétanos en un país en desarrollo. La aplicación de esta medida sería costo-efectiva en Colombia, especialmente para los hombres. Las diferencias en los resultados por género obliga a que cualquier decisión de implementación deba tener en cuenta la vacunación actual en mujeres en edad fértil.
OBJECTIVE: Assess the potential epidemiological and economic impact of vaccinating the over-15 Colombian population against tetanus with a booster dose every 10 years. METHODS: A cost-effectiveness analysis of tetanus vaccination with a booster dose every 10 years was conducted in Colombia and compared with the current strategy (2, 4, 6, 18, and 60 months). Estimates of the burden of disease were based on three official data sources. A Markov model from the perspective of the third party payer was developed. The time horizon was the lifetime of a person. Deterministic and probabilistic sensitivity analyses were conducted. RESULTS: In Colombia, 30 to 48 cases of tetanus resulting in 9.6 to 10.1 deaths are reported each year. Although booster vaccination for the entire population was cost-effective (the cost per disability-adjusted life year [DALY] avoided was US$ 11,314 in the entire population), gender-based differentiation of the results showed that it would not be cost-effective in women (cost per DALY avoided was US$ 4,903 in men and US$ 22,332 in women). CONCLUSIONS: This is the first study that evaluates the cost-effectiveness of a tetanus vaccine booster dose every 10 years in a developing country. Use of this measure would be cost-effective in Colombia, especially for men. As a result of the gender-based differences in the results, any decision about its use in women of childbearing age should take current vaccination into account.
Asunto(s)
Humanos , Masculino , Femenino , Preescolar , Niño , Adolescente , Adulto , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Adulto Joven , Toxoide Tetánico/economía , Tétanos/economía , Tétanos/epidemiología , Colombia/epidemiología , Análisis Costo-Beneficio , Inmunización Secundaria/economía , Tétanos/prevención & control , Factores de TiempoRESUMEN
O objetivo do estudo foi traçar o perfil clínico-social das gestantes atendidas numa unidade docente-assistencial baseada no modelo de saúde da família. Foi realizado um estudo descritivo, para o qual se utilizaram prontuários e estabeleceram-se as seguintes variáveis:idade, grau de escolaridade, peso, altura, paridade, exames laboratoriais de pré-natal, doenças identificadas no pré-natal ou anteriores à gestação, tabagismo, alcoolismo, planejamento da gravidez, aceitação da gravidez, apoio familiar, apoio do companheiro e auto imagem. Foram avaliados 104 prontuários e a média de idade das pacientes era de 24,2 maios ou menos 5,9 anos e a mediana de 24 anos. A pressão arterial (PA) tinha uma média de 105,9 mais ou menos 11,2 mmHg na sistólica e67,3 mais ou menos 10,6 mmHg na diastólica. Quanto à vacinação antitetânica, em 44,2por cento dos prontuários não havia o registro sobre a sua realização. Dos prontuários que continham o registro, 41,4por cento das gestantes tinham sido vacinadas havia menos de cinco anos, 22,4por cento entre cinco e 10 anos e 36,2por cento havia mais de 10 anos. A urocultura foi positiva em 22,9por cento. A gravidez foi planejada por 25,3por cento das pacientes, 61,1por cento tinham medo do parto. Concluiu-se que a população tem características de baixo risco gestacional, mas está exposta ao risco de bacteriúria assintomática. A estrutura corporal está com parâmetros normais. Há falhas na vacinação antitetânica. A maiorparte das gestações não foi planejada, as mulheres têm medo de apresentar problemas com o feto e têm medo do parto, contudo são apoiadas pela família.
The objective of the study was to trace the clinical profile of pregnant women from a teaching-care unit based on the model of the familyïs health. A descriptive study was carried out using charts and the following variables were studied: age, level of education, weight, height, parity, pre-natal laboratory tests, diseases identified in pre-natal or prior to pregnancy, smoking, alcoholism, planning of pregnancy, acceptance of the pregnancy, family support, support of companion and self-image. One-hundred and four medical records were evaluated and the average age of the patients was 24.2 more or less 5.9 years and a median of 24years. Blood pressure (BP) was an average of 105.9 more or less 11.2 mmHg for systolic and 67.3 more or less 10.6 mmHg for diastolic blood pressure. There was no record of tetanus vaccination in 44.2percent of the records. Of the medical records that recorded a vaccination, 41.4percent of pregnant women had been vaccinated had records that were less than five years-old, 22.4percent of the records were between five and 10 years-old and 36.2percent were older than 10 years. Urine culture was positive in 22.9percent of cases. Pregnancy was planned by 25.3percent of the patients, 61.1percent were afraid of childbirth. It was concluded that the population has the characteristics of low-risk pregnancy, but is exposed to the risk of asymptomatic bacteriuria. The body structurewas within normal parameters. There are flaws in tetanus vaccination. In large part, the pregnancies were not planned, the women were afraid to present problems with the fetus, and they were afraid of giving birth, however they were supported by a family.
El objetivo del estudio fue trazar el perfil clínicosocial de las mujeresembarazadas atendidas en una unidad escuelaasistencial basada en el modelo de salud de la familia. Estudio de tipo descriptivo, para el cual se utilizaron históricos médicos estableciendo las siguientes variables: edad, nivel de educación, peso, talla, paridad, pruebas de laboratorio, prenatal, enfermedades identificadas en el prenatal o antes del embarazo, tabaquismo, alcoholismo, planificación prenatal, aceptación del embarazo, apoyo familiar, apoyo del compañero y su autoimagen. Fueron evaluados 104 históricos médicos y el promedio de edad de los pacientes era 24,2 más o menos 5,9 años y una mediana de 24 años. La presión arterial (PA) presentó un promedio de 105,9 más o menos 11,2 mmHg para la sistólica y 67,3 más o menos 10,6 mmHg para la diastólica. En cuanto a la vacunación contra el tétanos, en 44,2por ciento de los históricos no había constancia de su aplicación. Los históricos médicos que contienen que contienen dicho registro, 41,4por ciento de las mujeres embarazadas habían sido vacunadas en un periodo menor de cinco años, 22,4por ciento entre 5 y 10 años y 36,2por ciento hacía más de 10 años. El análisis de orina fue positivo en 22,9por ciento. El embarazo fue planeado por 25,3por ciento de las pacientes, 61,1por ciento tenían miedo del parto. Se concluye que la población tiene características de bajo riesgo de preñez, pero está expuesta al riesgo de la bacteriuria asintomática. La estructura corporal está con los parámetros normales. Hay fallas en la vacunación contra el tétanos. La mayor parte de los embarazos no fueron planeados, las mujeres tienen miedo de tener un feto con problemas, así como miedo al parto. Sin embargo, reciben apoyo familiar.