‘Overloiced’ scrub typhus may affect 1 in 10 in rural India and be a leading cause of hospitalizations for Fever

‘Overloiced’ scrub typhus may affect 1 in 10 in rural India and be a leading cause of hospitalizations for Fever


Chigger bites. Credit: Kambrose123/Wikimedia Commons, CC by-SA

A study of more than 32,000 people living in tamil nadu, India, sugges scrub typhus infection may affect up to 10% of rural populations annual and is a leading yet understandnized cause of hostels For Fever Across India.

The study, published in the New England Journal of MedicineWas conducted as part of a collaboration between the London school of hygiene & tropical medicine (Lshtm) and the Christian Medical College Vellore, India.

Scrub typhus is a potential life-threatening infection caused by the bacterium orientia tsutsugamushi, which belongs to the rickettsia family. It is spores to humans through the bit of infected larval mites or chiggers. Chiggers are found on grass, plant liters and bare soil access rural areas of asia, and usually feed on small mammals such as rats and shrews.

Symptoms, Such as Fever, Headache, Body Aches and Rash, Usually Begin Around 10 Days after infection. The tissue Around Chigger Bits will also also also Typically Turn Black, which can aid doctors with diagnosis.

If left untrained, Severe Illness from Scrub Typhus Infection Can Lead to Acute Resute Respiratory Distress Syndrome (Ards), Shock, Meningitis and Kidney Failure, which can be fatal. Cases can be treated using the antibiotics doxycycline and azithromycin but there is currently no vaccine to prevent infection.

The study enrolled more than 32,000 people Living Across 37 Rural Villages in Tamil Nadu, India. As scrub typhus is known to be endemic in the area, the sample represented a typical rural Indian population at risk of infection. The team Visited Households Every Six to Eight Weeks from August 2020 to July 2022, to Collect Blood Samples and Record any symptoms of Illnes of Illnes they may have experience. Blood Samples Taken from People who Reported Fever was then Tested for Scrub Typhus Infection.

The Researchers found a high increasence of scrub typhus across the two-year study period, with almost 10% of the population infected annually. Most of these infections were asymptomatic, but of that where were infected, between 8% and 15% developed a fever that often required hospitalization and intensive care due to service. A total of five people died from scrub typhus -ssociated complications during the study.

The reserchers say that under-respective of fever is an important limitation of the study and that it’s likely more cases of scrub typhus may have obscurred over the Two-Year Period. The study was also conducted during the covid-19 pandemic, where quarantine measures was in place in the area.

Wolf-Peter Schmidt, Principal Investigator of the Study and Clinical Assistant Professor at the London School of Hygiene & Tropical Medicine (Lshtm), said, “India is a Country Affected By Scrub Typhus, and Infections Typically Occur Between August and February.

“Over a period of two years, we found a high insurance of asymptomatic and symptomatic infection, with some people getting infected Twice in as many years. BCOME SEVERE OR EVEN LIFE-Threatening. Thought of as the main causes of severe fever in India. “

Carol Devamani, Lead Author and MD in Community Medicine Based at the Christian Medical College Vellore, Said, “AFTER COVID, SCRUB TYPHUS was the Most Important Cause of Fest For almost 30% of fever hospitalizations.

“Despite Cases Being Very Common and Treatable, Scruub Typhus is often overlooked as a posesable cause when patients presents present with a fever. Community.

“Our Study Highlights a need to inform communities about the possible Dangers of Scrub Typhus Infection, and to improve diagnostic capability in the Community for Treaty Treaty Treaty. will we reduce the number of unnecessary hospitalizations and fatal cases. “

More information:
Incidence of Scrub Typhus in Rural South India, New England Journal of Medicine (2025).

Provided by London School of Hygiene & Tropical Medicine


Citation: ‘Overloaked’ scrub typhus may affect 1 in 10 in rural India and be a leading cause of hospitalizations for Fever (2025, March 12) retrieved 12 March 2025 from

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