Abstract
Objective: To identify the prevalence of Latent Tuberculosis Infection in communicants of patients with pulmonary tuberculosis. Materials and Methods: Observational, retrospective study performed at a health school in the city of Belém / PA / Brazil, a convenience sample of 1,000 patient records of patients with pulmonary tuberculosis. Data collection was performed with a form and data analyzed in Epi-Info 3.5 software. The research was approved by the UEPA Research Ethics Committee, CAAE nº 30932814.3.0000.5170. Results: A prevalence of ILTB of 50.7% was found, with more frequent PT + between male communicants (51.80%) and communicants in the age range from 31 to 40 years. The most frequent relationship of PT + (64.9%) was the "Father / Mother". The higher frequency of PT + is related to cases with index cases, residents of narrow streets, with residences up to 3 rooms and 3 windows. Conclusion: The prevalence of infected individuals was higher than the national prevalence of infected individuals.