What question did this study set out to answer?

The study aims to assess trends in diagnostic testing for viral and parasitic infections over an eight-year period.

Diagnostic Surveillance of Emerging and Endemic Infections in Southern India: An 8-Year Retrospective Laboratory-based Study

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Retrospective analysis reveals diagnostic trends in infections, highlighting public health implications in Southern India.

The study aims to assess trends in diagnostic testing for viral and parasitic infections over an eight-year period.
Retrospective observational study analyzing laboratory records of 19 infectious disease tests from 2017 to 2024.
Compiled annual data on the number of tests and positive results for trend analysis.
Identified patterns in testing volume and positivity rates.
Over 850,000 diagnostic tests performed during the study.
Dengue IgM testing peaked in 2024 with 3,307 tests; scrub typhus IgM tests surged from 86 in 2018 to 2,828 in 2024.
A noticeable increase in hepatitis A and E virus testing occurred in 2024.

Ramalingam et al. (2026) studied this question.

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