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Revista Pan-Amazônica de Saúde

Print version ISSN 2176-6223On-line version ISSN 2176-6223


CUNHA, Maria Heliana Chaves Monteiro da et al. Risk factors in household contacts of leprosy patients using clinical, sociodemographic, and laboratorial variables. Rev Pan-Amaz Saude [online]. 2017, vol.8, n.2, pp.21-28. ISSN 2176-6223.


To identify risk factors in household contacts of leprosy patients, using clinical, sociodemographic, and laboratorial variables.


Cases series were investigated evaluating the household contacts of leprosy patients that were attended in a reference center in Pará State, Brazil, from 2012 to 2015. Dermatoneurological examinations, anti-PGL-I serology (ELISA, using cut-off point 0.2 and 0.13), and BCG vaccine control were performed, as well as clinical demographic data survey from the index case was conducted.


There was higher predominance of the contacts that had been BCG vaccinated at least once (91.1%), higher seropositivity among contacts that present the disease multibacillary leprosy form, being more prevalent when the cut-off point was 0.13 (61.5%). The higest anti-PGL-I titrations were detected among the female group (51.1%), those that had elementary education (46.7%) and were among 15 to 40 years old (47.8%). The majority of individuals (91.4%) lived in houses with less than two rooms.


It was concluded that low education level, age and living conditions may be risk factors for leprosy illness among household contacts of the multibacillary leprosy form; the younger age groups are more exposed to the bacillus contact; and that the anti-PGL-I serology is an important tool for tracking contacts of multibacillary leprosy forms.

Keywords : Leprosy; Epidemiological Surveillance; Serology; Risk Factors.

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