Soriano Arandes, AntoniCaylà i Buqueras, Joan A.Queiroga Gonçalves, AlessandraOrcau i Palau, ÀngelsNoguera Julian, AntoniPadilla, EmmaSolà Segura, ElisabetRíus Gordillo, NeusEspiau, MaríaGarcía Lerín, Mónica G.Rifà Pujol, Maria ÀngelsGómez i Prat, JordiMacia Rieradevall, EsperançaMartín Nalda, AndreaEril Rius, MariaSantos Santiago, JoséBusquets Poblet, LídiaMorales Martínez, RaisaPérez-Porcuna, Tomàs M.2021-06-082021-06-082020-09-040025-7974https://hdl.handle.net/2445/178094Introduction: Tuberculosis (TB) is a global infectious disease. In low-incidence countries, paediatric TB affects mostly immigrant children and children of immigrants. We hypothesize that these children are at risk of exposure to Mycobacterium tuberculosis when they travel to the country of origin of their parents to visit friends and relatives (VFR). In this study, we aim to estimate the incidence rate and risk factors associated to latent tuberculosis infection (LTBI) and TB in VFR children. Methods and analysis: A prospective study will be carried out in collaboration with 21 primary health care centres (PCC) and 5 hospitals in Catalonia, Spain. The study participants are children under 15 years of age, either immigrant themselves or born to immigrant parents, who travel to countries with high incidence of TB (≥ 40 cases/100,000 inhabitants). A sample size of 492 children was calculated. Participants will be recruited before traveling, either during a visit to a travel clinic or to their PCC, where a questionnaire including sociodemographic, epidemiological and clinical data will be completed, and a tuberculin skin test (TST) will be performed and read after 48 to 72 hours; patients with a positive TST at baseline will be excluded. A visit will be scheduled eight to twelve-weeks after their return to perform a TST and a QuantiFERON-TB Gold Plus test. The incidence rate of LTBI will be estimated per individual/month and person/year per country visited, and also by age-group.7 p.application/pdfengcc-by (c) Soriano Arandes, Antoni et al., 2020https://creativecommons.org/licenses/by/4.0/TuberculosiInfeccions en els infantsTuberculosisInfection in childreninfo:eu-repo/semantics/article7032462021-06-08info:eu-repo/semantics/openAccess