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Background <p>Flaviviral infections such as dengue and Kyasanur Forest Disease (KFD) are endemic causes of acute febrile illness in South India, with some cases progressing to severe disease and death.</p> Methods <p>We conducted a retrospective observational study at a tertiary care centre from June 2023 to June 2024, enrolling 107 adults diagnosed with dengue (NS1/IgM positive) or KFD (Polymerase chain reaction assay-confirmed). Clinical and biomarker data, including haematological, hepatic, renal, inflammatory, and endothelial parameters, were analysed to find differences between the two diseases and identify predictors of 28-day mortality.</p> Results <p>Eleven patients (10.3%) died within 28 days. KFD patients were older and had higher adrenomedullin and transaminase levels. Dengue cases showed higher SOFA scores and more severe thrombocytopenia. Mortality was associated with elevated coagulation markers, serum creatinine, procalcitonin, and adrenomedullin. Aspartate aminotransferase was more frequently elevated in non-survivors.</p> Conclusions <p>Combining conventional and novel biomarkers, such as adrenomedullin, may help early identification of high-risk patients, improving prognostication and management of endemic flaviviral infections.</p>

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Role of biomarkers in predicting mortality in patients with flaviviral disease endemic to South India: a retrospective observational study

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月26日

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  • Nitin Gupta,
  • Pothumarthy Venkata Swathi Kiran,
  • Mohammad Khalid,
  • Tirlangi Praveen Kumar,
  • Prithvishree Ravindra,
  • Rachana Bhat

摘要

Background

Flaviviral infections such as dengue and Kyasanur Forest Disease (KFD) are endemic causes of acute febrile illness in South India, with some cases progressing to severe disease and death.

Methods

We conducted a retrospective observational study at a tertiary care centre from June 2023 to June 2024, enrolling 107 adults diagnosed with dengue (NS1/IgM positive) or KFD (Polymerase chain reaction assay-confirmed). Clinical and biomarker data, including haematological, hepatic, renal, inflammatory, and endothelial parameters, were analysed to find differences between the two diseases and identify predictors of 28-day mortality.

Results

Eleven patients (10.3%) died within 28 days. KFD patients were older and had higher adrenomedullin and transaminase levels. Dengue cases showed higher SOFA scores and more severe thrombocytopenia. Mortality was associated with elevated coagulation markers, serum creatinine, procalcitonin, and adrenomedullin. Aspartate aminotransferase was more frequently elevated in non-survivors.

Conclusions

Combining conventional and novel biomarkers, such as adrenomedullin, may help early identification of high-risk patients, improving prognostication and management of endemic flaviviral infections.