Design of the leprosy component of the Brazilian BCG revaccination trial for assessing BCG effectiveness against leprosy in school children

International Journal of Leprosy and Other Mycobacterial Diseases : Official Organ of the International Leprosy Association
Sergio S CunhaLaura C Rodrigues

Abstract

BCG vaccination confers protection against leprosy, and vaccination among household contacts has been recommended in Brazil. Nevertheless, vaccination of the entire community against leprosy is not advocated as leprosy has low incidence in most populations. Despite that, in Brazil, BCG vaccination is recommended among school children to prevent tuberculosis and this large scale vaccination may also affect the occurrence of leprosy, which led to investigations of its impact on leprosy in endemic areas of Brazil. To estimate the effectiveness against leprosy of a dose of BCG vaccine given to school children in a population with a high coverage of neonatal BCG. Long term objectives are to compare the impact of vaccination among schoolchildren with the existing recommendation to vaccinate household contacts of leprosy. Cluster randomized controlled field trial with no placebo. Children aged 7 to 14 years attending state schools with high coverage of neonatal BCG. 286 state schools in the city of Manaus, Brazil, were randomized to receive BCG or not. Identifying information was collected for 152,438 school children, of whom 72,980 are in intervention schools. BCG vaccination was given intradermically to children in schools allocated...Continue Reading

Citations

Feb 28, 2006·The Lancet Infectious Diseases·Maninder Singh SetiaGeorge W Rutherford
Feb 14, 2008·PLoS Neglected Tropical Diseases·Sérgio S CunhaLaura C Rodrigues
Feb 4, 2010·Respiratory Medicine·Arnaud BourdinPhilippe Godard
Apr 15, 2006·Clinical Microbiology Reviews·D M ScollardD L Williams
Dec 2, 2010·Microbiology and Molecular Biology Reviews : MMBR·Elizabeth A MischThomas R Hawn

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