Juan David Puyana Ortiz, Andrea Carolina Garcés Garcés Rodríguez, María Luisa Aznar, Juan Espinosa Pereiro, Adrián Sánchez-Montalvá, Joan Martínez-Campreciós, Nuria Saborit, José Ángel Rodrigo-Pendás, Guadalupe García Salgado, Claudia Broto Broto Cortes, Nuria Serre Delcor, Inés Oliveira, Begoña Treviño Treviño Maruri, Diana Pou Ciruelo, Fernando Salvador, Pau Bosch-Nicolau, Irene Torrecilla-Martínez, Ricardo Zules-Oña, María Teresa Tórtola Tórtola Fernández, Israel Molina

Adherence and Toxicity during the Treatment of Latent Tuberculous Infection in a Referral Center in Spain

  • Infectious Diseases
  • Public Health, Environmental and Occupational Health
  • General Immunology and Microbiology
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The screening and treatment of latent tuberculosis infection (LTBI) in countries with a low incidence of TB is a key strategy for the elimination of tuberculosis (TB). However, treatment can result in adverse events (AEs) and have poor adherence. This study aimed to describe treatment outcomes and AEs for LTBI patients at two departments in Vall d’Hebron University Hospital in Barcelona, Spain. A retrospective study was conducted on all persons treated for LTBI between January 2018 and December 2020. Variables collected included demographics, the reason for LTBI screening and treatment initiation, AEs related to treatment, and treatment outcome. Out of 261 persons who initiated LTBI treatment, 145 (55.6%) were men, with a median age of 42.1 years. The indications for LTBI screening were household contact of a TB case in 96 (36.8%) persons, immunosuppressive treatment in 84 (32.2%), and recently arrived migrants from a country with high TB incidence in 81 (31.0%). Sixty-three (24.1%) persons presented at least one AE during treatment, and seven (2.7%) required definitive discontinuation of treatment. In the multivariate analysis, AE development was more frequent in those who started LTBI treatment due to immunosuppression. Overall, 226 (86.6%) completed treatment successfully. We concluded that LTBI screening and treatment groups had different risks for adverse events and treatment outcomes. Persons receiving immunosuppressive treatment were at higher risk of developing AEs, and recently arrived immigrants from countries with a high incidence of TB had greater LTFU. A person-centered adherence and AE management plan is recommended.

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