Leptospirosis and Severe Pulmonary Hemorrhagic Syndrome in Brazil
Author Information
Author(s): Gouveia Edilane L., Metcalfe John, de Carvalho Ana Luiza F., Aires Talita S.F., Villasboas-Bisneto José Caetano, Queirroz Adriano, Santos Andréia C., Salgado Kátia, Reis Mitermayer G., Ko Albert I.
Primary Institution: Fundação Oswaldo Cruz, Ministério da Saúde, Salvador, Bahia, Brazil
Hypothesis
What factors are responsible for the emergence of leptospirosis-associated severe pulmonary hemorrhagic syndrome (SPHS) in Salvador, Brazil?
Conclusion
The study found that SPHS emerged in Salvador, Brazil, with a high case-fatality rate of 74% among identified cases.
Supporting Evidence
- 47 cases of SPHS were identified from 2003 through 2005.
- The case-fatality rate for SPHS was 74%.
- By 2005, SPHS caused 55% of the deaths due to leptospirosis.
- 79% of SPHS cases had a confirmed diagnosis of leptospirosis.
- SPHS was associated with a significantly higher fatality rate compared to non-SPHS leptospirosis.
Takeaway
Leptospirosis can cause a serious lung problem called SPHS, which is very dangerous and can lead to death, especially in slum areas during heavy rain.
Methodology
The study involved active surveillance for leptospirosis cases, clinical evaluations, and laboratory testing for diagnosis.
Potential Biases
Potential bias in case identification due to heightened awareness of SPHS in other regions.
Limitations
The study did not identify significant environmental risk exposures for acquiring SPHS.
Participant Demographics
Most SPHS case-patients were adults (mean age 37.6 years) and predominantly male (70%).
Statistical Information
P-Value
0.001
Confidence Interval
1.36–5.98
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website