Differences in Clinical Features of Scrub Typhus by Genotype
Author Information
Author(s): Kim Dong-Min, Yun Na Ra, Neupane Ganesh Prasad, Shin Sung Heui, Ryu So Yeon, Yoon Hee Jung, Wie Seong Heon, Kim Woo Jin, Lee Chang Youl, Choi Jong Soo, Yang Tae Young
Primary Institution: Chosun University, Gwangju, Republic of Korea
Hypothesis
Are there differences in clinical features between the Boryoung and Karp genotypes of Orientia tsutsugamushi in humans?
Conclusion
The frequency of occurrence of eschars and rashes may depend on the genotype of O. tsutsugamushi.
Supporting Evidence
- Patients infected with the Boryoung cluster had more generalized weakness and skin rashes than those infected with the Karp cluster.
- Eschars were observed in 97% of Boryoung patients compared to 73.7% in Karp patients.
- The mean time to fever clearance was significantly shorter in Boryoung patients than in Karp patients.
Takeaway
This study found that people infected with different types of a germ called Orientia tsutsugamushi can have different symptoms, like skin rashes and sores.
Methodology
Patients infected with O. tsutsugamushi were compared for clinical features, complications, laboratory parameters, and treatment responses across six hospitals.
Limitations
The study had a low number of Karp infections, which may affect the generalizability of the findings.
Participant Demographics
The mean age of Boryoung cluster patients was 62 years, with 38.3% males; Karp cluster patients had a mean age of 59 years, with 52.6% males.
Statistical Information
P-Value
p<0.001 for eschars and rashes
Confidence Interval
95% CI = −61.5∼−3.2
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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