Nearly 1 in 3 Indian fever patients test positive for serious infections: Study

A new study has found that nearly 1 in 3 Indian fever patients test positive for serious infections based on testing data collected between 2023 and 2025The analysis by healthcare diagnostics company Thyrocare covers over one lakh 108324 individuals who underwent comprehensive fever package testing across India The findings show that nearly one in three individuals who opted for comprehensive fever testing were diagnosed with a serious infection including dengue typhoid malaria chikungunya or leptospirosisIn India fever is often brushed off casually ldquoJust viral ldquoWait it out ldquoRest and basic medication But diagnostic data from 2023 to 2025 tells a far more alarming story one that turns casual reassurance into a dangerous oversight Behind what appears to be an ordinary fever a significant proportion of patients were diagnosed with infections that required medical intervention from dengue and malaria to typhoid and other illnesses The numbers challenge a deeply rooted cultural habit ndash to selfdiagnose selfmedicate and waitSerious infections detected in a significant share of patientsTyphoid emerged as the most commonly detected infection identified in nearly one in five patients 181 per cent followed by dengue in about one in seven 144 per cent Malaria chikungunya and leptospirosis were also recorded across the testing population further contributing to the overall infectious disease burdenThese findings indicate that a substantial proportion of fever cases are not vague or selflimiting but have clearly identifiable infectious causes Structured diagnostic testing helps convert clinical uncertainty into timely and targeted medical actionThe data also highlights the presence of multiple infections in a notable proportion of patients Nearly 10 per cent of infectionpositive individuals were diagnosed with coinfections most commonly a combination of dengue and typhoid Because these illnesses can present with similar early symptoms but require different treatment approaches coinfections can complicate diagnosis and delay appropriate care if not identified earlyRahul Guha who is the MD amp 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 datadriven insights remains one of the most effective ways to navigate Indiarsquos evolving and unpredictable infectious disease landscaperdquoDr Preet Kaur chief scientific officer with the company explained ldquoData 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 underscoring that fever is a systemic signal not an isolated eventrdquoInfection patterns shifting over time and across regionsThe study tracks changes in infection trends between 2023 and 2025 Dengue positivity declined significantly over the threeyear period while malaria increased despite its lower overall base Typhoid and chikungunya rose in 2024 before easing in 2025 but remained present across the testing populationGeographic variation was also observed with transmission levels differing across regions and some areas consistently reporting higher positivity rates than others At the same time most regions showed a gradual decline in dengue and typhoid transmission over the threeyear period indicating an overall reduction in transmission levels in several parts of the countryFever often signals deeper physiological stressLaboratory findings show that fever is frequently associated with measurable systemic impact affecting key physiological markers such as platelet counts and liver functionLow platelet levels thrombocytopenia were observed in 27 per cent of fever patients nearly double the 15 per cent seen in nonfever cases The difference was particularly pronounced in malariapositive patients where nearly 8 in 10 experienced a platelet drop compared to a very small proportion among malarianegative individuals Denguepositive patients also showed significant platelet reductions with 37 per cent affected compared to 15 per cent in denguenegative casesLiver enzyme abnormalities were also widely observed More than half of all fever patients 56 per cent showed elevated SGOT levels and 37 per cent had elevated SGPT both higher than levels seen among nonfever individuals 42 per cent and 26 per cent respectively Infectionspecific comparisons showed marked liver stress across multiple diseases including dengue malaria and leptospirosisThese findings indicate that infectious fevers are often associated with measurable organ stress highlighting that fever can reflect broader physiological involvement beyond the presence of infection aloneThe gender and seasonal divideGenderbased differences were observed across infections Overall fever positivity was slightly higher among females 32 per cent compared to 29 per cent largely driven by higher typhoid detection 21 per cent vs 15 per cnet In contrast malaria affected men more than twice as often as women 11 per cent vs 05 per centSeasonal patterns were also clearly visible across infections Dengue positivity rises through the year and typically peaks around OctoberTyphoid positivity has steadily fallen from 2023 to its lowest in 2025 Despite a mild monsoon spike each year 2025 remains consistently lower overallChikungunya positivity rose gradually from lower volatile levels in 2023 peaked sharply in 2024 and moderated to a softer trend in 2025Malaria positivity remains relatively low overall but increases during the monsoon months with transmission peaking between May and September Over the threeyear period malaria positivity rose from 05 per cent to 11 per cent indicating a gradual increase despite its lower overall baseStandalone testing also reveals substantial disease burdenAnalysis of standalone fever testing across 259 lakh patients between 2023 and 2025 recorded an overall positivity rate of 226 per cent indicating a significant infectious disease burden among individuals tested for specific conditionsDengue accounted for the highest testing volume with 144 lakh tests conducted and a positivity rate of 166 per cent Typhoid followed with 115 lakh tests and a higher positivity rate of 227 per cent Malaria detection remained relatively low at 16 per cent despite more than 90000 tests conducted while chikungunya though tested in fewer individuals 27900 showed a high positivity rate of 23 per centThese findings show that targeted testing for individual infections can detect substantial disease presence However standalone testing may not capture overlapping or coexisting infections highlighting the value of comprehensive diagnostic panels in providing a more complete clinical understanding of fever