Arlene de Jesus Mendes Caldas|Jackson Maurício Lopes Costa|Antônio Augusto Moura da Silva|V. Vinhas|Aldina Barral
Risk factors associated with asymptomatic infection by Leishmania chagasi in north-east Brazil
Universidade Federal do Maranhão|Universidade Federal do Maranhão|Universidade Federal do Maranhão|Universidade Federal da Bahia|Fundação Oswaldo Cruz|Universidade Federal da Bahia
various factors associated predisposition development clinical american visceral leishmaniasis avl however little information available factors predispose asymptomatic infection identify risk factors associated asymptomatic infection study carried july 1997 june 1998 children aged 05 years districts vila nova bom viver municipality raposa island lus state maranho brazil questionnaire containing socioeconomic demographic epidemiological data used delayedtype hypersensitivity dth test carried 639 children first phase 572 second 7 months first survey using leishmania amazonensis antigen infection determined enzymelinked immunosorbent assay elisa 638 children first phase 572 second six outcome measures used initial prevalence final prevalence incidence determined dth elisa incidence infection 108 determined dth 285 determined elisa adjustment confounding variables using cox regression infection l chagasi associated childs age 2 years location dwellings vila nova reporting relatives avl bathing outside house playing outdoors 1800 2000 identified risk factors analyses others presence intra peridomestic lutzomyia sandflies animals dogs chickens house neighbourhood appeared risk factors analyses others unexpectedly seemed protect infection malnutrition found associated infection