Thyrocare Technologies Limited, a leading healthcare diagnostics company, has released new insights into India’s fever burden based on testing data collected between 2023 and 2025.
The analysis examined over one lakh individuals (108,324) who underwent comprehensive Fever Package testing across India. The findings reveal a striking pattern: nearly one in three individuals tested were diagnosed with a serious infection, including dengue, typhoid, malaria, chikungunya, or leptospirosis.
These results highlight the importance of early diagnostic testing for fever, especially in a country where fever is often underestimated or treated casually.
The Hidden Risk Behind “Just a Viral Fever”
In many parts of India, people frequently dismiss fever as a temporary viral illness. Phrases like “just viral,” “wait it out,” or “take rest and basic medication” remain common responses.
However, diagnostic data from 2023 to 2025 paints a very different picture. A significant proportion of patients who initially presented with fever were later diagnosed with infections that required timely medical intervention, including dengue, malaria, and typhoid.
Therefore, these findings challenge a deeply rooted cultural habit in India—self-diagnosis, self-medication, and delaying medical evaluation. Instead, structured diagnostic testing can help convert uncertainty into timely and targeted treatment.
Typhoid and Dengue Lead Among Detected Infections
Among the infections identified through comprehensive fever testing, typhoid emerged as the most commonly detected disease, affecting 18.1% of patients, or nearly one in five individuals.
This was followed by dengue, which affected 14.4% of patients, roughly one in seven individuals tested. Meanwhile, malaria, chikungunya, and leptospirosis were also detected across the patient population, collectively contributing to the overall infectious disease burden.
These findings suggest that many fever cases have clearly identifiable infectious causes, rather than being vague or self-limiting illnesses.
Co-Infections Complicate Diagnosis and Treatment
Another critical insight from the data is the presence of multiple infections in some patients. Nearly 10% of infection-positive individuals were diagnosed with co-infections, most commonly a combination of dengue and typhoid.
Because these diseases often share similar early symptoms, co-infections can complicate diagnosis and delay appropriate treatment if clinicians do not identify them early. Consequently, comprehensive fever testing plays an essential role in detecting overlapping infections and guiding accurate treatment strategies.
Experts Emphasise the Importance of Early Testing
Commenting on the findings, Rahul Guha, MD & CEO of Thyrocare, said:
“Recognising fever as a critical signal empowers patients and clinicians alike to act decisively. It shifts care from reactive treatment to timely and informed intervention. Ultimately, early evaluation supported by data-driven insights remains one of the most effective ways to navigate India’s evolving and unpredictable infectious disease landscape.”
Similarly, Dr. Preet Kaur, Chief Scientific Officer, Thyrocare, highlighted the broader implications of the data:
“Data from 2023 to 2025 shows that a significant number of patients carry serious infections, sometimes more than one at a time, revealing patterns that simple assumptions cannot capture. Beyond the visible rise in temperature, laboratory markers highlight hidden stress on organs—from drops in platelet counts to elevated liver enzymes—showing that fever is a systemic signal rather than an isolated event.”
Infection Trends Changing Across Time and Regions
The analysis also tracked changes in infection trends over the three-year period.
- Dengue positivity declined significantly between 2023 and 2025.
- Malaria cases increased, although the overall positivity rate remained relatively low.
- Typhoid and chikungunya cases rose in 2024, before easing slightly in 2025.
At the same time, the study identified regional differences in infection transmission, with certain areas consistently reporting higher positivity rates. Nevertheless, many regions showed a gradual reduction in dengue and typhoid transmission, indicating improved disease control in several parts of the country.
Fever Often Indicates Deeper Physiological Stress
Laboratory findings also demonstrate that fever frequently reflects systemic physiological stress, affecting critical health markers such as platelet levels and liver function.
For instance, low platelet counts (thrombocytopenia) were observed in 27% of fever patients, compared to 15% in individuals without fever.
The difference was particularly significant in certain infections:
- Malaria: Nearly 8 out of 10 patients experienced platelet drops.
- Dengue: 37% of infected patients had reduced platelet levels, compared with 15% in dengue-negative individuals.
In addition, liver enzyme abnormalities were widely detected. Among fever patients:
- 56% showed elevated SGOT levels
- 37% showed elevated SGPT levels
These rates were notably higher than those observed in non-fever patients (42% and 26% respectively). Furthermore, infection-specific analysis revealed significant liver stress in diseases such as dengue, malaria, and leptospirosis.
Together, these findings suggest that infectious fevers often involve broader physiological impact beyond infection alone.
Gender Differences and Seasonal Infection Patterns
As per the press release, the study also identified gender-based and seasonal variations in infection trends.
Overall fever positivity was slightly higher among females (32%) compared to males (29%), largely due to higher typhoid detection rates among women (21% vs 15%). In contrast, malaria affected men more than twice as often as women, with positivity rates of 1.1% in men compared to 0.5% in women.
Seasonal trends were also evident across infections:
- Dengue positivity increases through the year and typically peaks around October.
- Typhoid cases have steadily declined from 2023 to their lowest levels in 2025, despite small monsoon-related spikes.
- Chikungunya cases rose sharply in 2024 before moderating in 2025.
- Malaria cases increase during the monsoon season, particularly between May and September.
Although malaria remains relatively uncommon overall, its positivity rate increased from 0.5% in 2023 to 1.1% in 2025, indicating a gradual upward trend.
Standalone Testing Also Reveals Significant Disease Burden
In addition to comprehensive fever packages, Thyrocare analysed standalone infection testing across 2.59 lakh patients between 2023 and 2025. The analysis recorded an overall positivity rate of 22.6%, highlighting a substantial infectious disease burden among individuals tested for specific conditions.
Among the tests conducted:
- Dengue: 1.44 lakh tests with 16.6% positivity
- Typhoid: 1.15 lakh tests with 22.7% positivity
- Malaria: Over 90,000 tests with 1.6% positivity
- Chikungunya: 27,900 tests with a high positivity rate of 23%
While standalone testing successfully detects individual infections, it may miss overlapping or co-existing diseases. Therefore, comprehensive diagnostic panels remain crucial for capturing the full clinical picture of fever-related illnesses.
The Need for Data-Driven Fever Diagnosis
Overall, Thyrocare’s analysis underscores a crucial public health message: fever should not be dismissed as a routine viral illness without evaluation. Instead, early diagnostic testing and data-driven clinical decision-making can significantly improve patient outcomes by enabling timely detection and treatment of infectious diseases.