Surveillance of close contacts of patients with infectious tuberculosis: a prospective cohort study
Zichun Ma,
Shujuan Duan,
Wei Wang
et al.
Abstract:Background
A long-term follow-up of close contacts to monitor their infection status is essential to formulate a promising screening strategy. The study aimed to assess the dynamics of tuberculosis (TB) infection using Interferon-γ release assay (IGRA) and determine risk factors associated with TB infection.
Methods
Definite TB patients were interviewed and their household contacts were screened for TB infection by IGRA during 12-month longitudinal… Show more
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