RT Journal Article SR Electronic T1 Multidrug-resistant tuberculosis in children: evidence from global surveillance JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP erj01758-2012 DO 10.1183/09031936.00175812 A1 Matteo Zignol A1 Charalambos Sismanidis A1 Dennis Falzon A1 Philippe Glaziou A1 Masoud Dara A1 Katherine Floyd YR 2012 UL http://erj.ersjournals.com/content/early/2012/12/06/09031936.00175812.abstract AB Multidrug-resistant tuberculosis (MDR-TB) can affect persons of any age but it remains unknown whether children are more or less likely than adults to have MDR-TB.Representative drug resistance surveillance data reported to the World Health Organization between 1994 to 2011 were analysed to test the association between MDR-TB and age-group (children aged<15 vs adults agedā‰„15), using odds ratios (OR) derived by logistic regression with robust standard errors.Of 85 countries with data from nationwide surveys or surveillance systems, 35 reported at least one paediatric MDR-TB case. Aggregated data on age and drug susceptibility testing for 316,976 tuberculosis cases notified in these 35 countries were analysed. ORs for MDR-TB in children compared to adults varied widely between countries. In Germany, Namibia, South Africa, United Kingdom and United States, MDR-TB was positively associated with age<15 years. In the remaining countries no association was established.Despite the limitations intrinsic to the use of surveillance data and to the challenges of diagnosing childhood tuberculosis, our analysis suggests that proportions of MDR-TB in children and adults are similar in many settings. Of particular concern is the association found between age<15 years and MDR-TB in southern African countries with high HIV prevalence.