Video Experimental Relacionado
Updated: Aug 13, 2026
09:02
An Experimental Model to Study Tuberculosis-Malaria Coinfection upon Natural Transmission of Mycobacterium tuberculosis and Plasmodium berghei
Published on: February 17, 2014
Infecciosidad de Mycobacterium tuberculosis en pacientes infectados por el VIH-1 con tuberculosis: un estudio
M A Espinal1, E N Peréz, J Baéz
1National Centre for Research on Maternal and Child Health, Santo Domingo, Dominican Republic. espinalm@who.ch
Lancet (London, England)
|February 16, 2000
Resumen
Las personas con tuberculosis y infección por VIH-1 parecen menos propensas a transmitir Mycobacterium tuberculosis a los contactos del hogar. Este hallazgo sugiere que no se necesitan cambios en las políticas actuales de rastreo de contactos de tuberculosis cuando el VIH-1 está presente.
Área de la Ciencia:
- Epidemiología de las enfermedades infecciosas.
- Salud pública La salud pública es la salud pública.
Sus antecedentes:
- Existen resultados contradictorios con respecto a la infecciosidad de las personas con VIH-1 y tuberculosis pulmonar.
- La evaluación del impacto del VIH-1 en la transmisión de Mycobacterium tuberculosis es crucial para las estrategias de salud pública.
Objetivo del estudio:
- Evaluar prospectivamente el efecto del virus de la inmunodeficiencia humana tipo 1 (VIH-1) en la infecciosidad de Mycobacterium tuberculosis.
- Para determinar si el estado de VIH-1 de un caso índice influye en la transmisión de la tuberculosis dentro de los hogares.
Principales métodos:
- Se realizó un estudio de cohorte prospectivo en la República Dominicana.
- Los contactos domésticos de pacientes recién diagnosticados con tuberculosis pulmonar (VIH-1 positivo y negativo) fueron seguidos durante 14 meses.
- Se utilizaron pruebas cutáneas de tuberculina, pruebas de anergia, exámenes físicos, radiografías de tórax y frotis de esputo para evaluar la infección y la enfermedad de M tuberculosis.
Principales resultados:
- La positividad de la tuberculina fue significativamente menor en los contactos de los casos de índice VIH-1-positivo (61%) en comparación con los casos de índice VIH-1-negativo (76%).
- El análisis multivariado confirmó una asociación inversa entre el estado del caso índice VIH-1 y la respuesta a la tuberculina en los contactos (OR 0,52).
- La conversión de la prueba cutánea de tuberculina fue menos frecuente entre los contactos de casos de índice VIH-1-positivos.
Conclusiones:
- Los individuos VIH-1-positivos con tuberculosis parecen ser menos infecciosos para la transmisión de Mycobacterium tuberculosis a contactos cercanos en comparación con los individuos VIH-1-negativos.
- Las políticas actuales de rastreo de contactos de tuberculosis no requieren modificación en el contexto de la coinfección por el VIH-1.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:29Pulmonary Tuberculosis I
Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
01:28Pulmonary Tuberculosis II
Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
01:31Pulmonary Tuberculosis III
Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
The first classification is based on the development of the disease, and it includes the following categories:
01:26Pulmonary Tuberculosis IV
Tuberculosis, more commonly referred to as TB, is an infectious disease stemming from Mycobacterium tuberculosis. While it primarily impacts the lungs, TB can also affect other body areas. Given its severity and global impact, timely and accurate diagnosis is crucial for controlling its spread and improving patient outcomes.
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
01:28Pulmonary Tuberculosis V
Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
01:23Tuberculosis
Tuberculosis (TB) remains a significant global health concern, primarily targeting the lungs and spreading through airborne transmission. Infection begins when aerosolized droplet nuclei, expelled by an individual with active TB, are inhaled by another person. These microscopic particles carry Mycobacterium tuberculosis, the causative agent of TB. Upon reaching the alveoli, the bacilli are engulfed by alveolar macrophages. However, due to their specialized lipid-rich cell wall, these pathogens...