New epidemiological profile of schistosomiasis from an area of low prevalence in Brazil
Rev. Soc. Bras. Med. Trop
;
53: e20200335, 2020. tab, graf
Article
in English
| SES-SP, ColecionaSUS, LILACS
| ID: biblio-1136822
ABSTRACT
Abstract INTRODUCTION:
Schistosomiasis, caused by infection from Schistosoma mansoni, is a disease that represents an important public health problem for Brazil, especially for states in the Northeast region. Thus, the aim of this study is to present a new epidemiological profile for the disease in a municipality with low prevalence in the state of Alagoas, Brazil.METHODS:
A cross-sectional study was conducted through a coproparasitological and malacological survey. A structured questionnaire was applied to the study participants to survey possible risk factors and a spatial analysis (kernel density) was used to measure the risk of infection.RESULTS:
Of the 347 participants, 106 (30.5%) were infected by Schistosoma mansoni, most of them from the urban area of the municipality (68.9%; 73/106). A 3-fold risk of infection was found for individuals living in the urban area and a risk of 2.15 times for self-declared farmers. Biomphalaria glabrata and B. straminea were the species found in the municipality, but no animals were diagnosed as infected by the parasite. Spatial analysis showed a random distribution of vectors and human cases of the disease, and the formation of two clusters of human cases in the urban area was seen.CONCLUSIONS:
A new epidemiological profile for schistosomiasis from S. mansoni infection was presented in a municipality of low endemicity a high proportion of positive individuals in the urban area; presence of snails without positive diagnosis for S. mansoni infection; random distribution of vectors and human cases; and absence of association between classical risk factors and human infection.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Schistosomiasis mansoni
Type of study:
Observational study
/
Prevalence study
/
Qualitative research
/
Risk factors
Limits:
Aged80
/
Animals
/
Female
/
Humans
/
Male
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Rev. Soc. Bras. Med. Trop
Year:
2020
Type:
Article
Institution/Affiliation country:
Fundação Oswaldo Cruz/BR
/
Universidade Estadual de Alagoas/BR
/
Universidade Federal de Sergipe/BR
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