About 2 billion people worldwide are infected with tuberculosis (TB). Ninety percent of those people have latent TB infection (LTBI). Risk factors like malnutrition, diabetes mellitus (DM), and helminth infection can affect the development of active TB. Researchers want to study LTBI individuals with these issues to see how they may contribute to a person s higher risk for developing active TB. This study will take place in Chennai, India. Objective: To estimate the prevalence of malnutrition, DM, and helminth infections in people with LTBI. Eligibility: People age 14 65 with or without LTBI. Design: Participants will be screened with a medical history and physical exam focused on symptoms of active TB. Those who have TB symptoms will not take part in the study. Those who do not have TB symptoms will have a physical exam with vital signs, height, and weight. They will give blood and stool samples. Participants will be assigned to 1 of 6 groups. They will repeat some of the screening tests. They will give urine samples. Some groups will have a chest X-ray. Some groups will have an ultrasound of the abdomen. Participants will complete a survey about their history of smoking and drug and alcohol use. Participants will have data collected about their nutritional status and body composition. Their skinfold thickness, ratio of waist/hip circumference, and grip strength will be measured. Participants with DM, malnutrition, or helminth infection will be given standard of care or referred for follow-up treatment. Participation will last up to 6 months. ...
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Prevalence of malnutrition, DM and helminth infections in LTBI individuals and their effects on biosignatures
Timeframe: Study Phase visit