Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India

Problem considered: Scrub typhus, a re-emerging zoonotic infection, often manifests as acute undifferentiated febrile illness (AUF), posing a significant epidemiological threat in tropical and subtropical regions. Its nonspecific clinical presentation complicates timely diagnosis, increasing the ris...

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Main Authors: Gayatri Sondhiya, Prakash Tiwari, HV Manjunathachar, Vivek Chouksey, Pradeep Tiwari, Pradip V. Barde, Chandrashekhar G. Raut, Tapas Chakma, Harpreet Kaur, Pushpendra Singh
Format: Article
Language:English
Published: Elsevier 2025-05-01
Series:Clinical Epidemiology and Global Health
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Online Access:http://www.sciencedirect.com/science/article/pii/S2213398425000892
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author Gayatri Sondhiya
Prakash Tiwari
HV Manjunathachar
Vivek Chouksey
Pradeep Tiwari
Pradip V. Barde
Chandrashekhar G. Raut
Tapas Chakma
Harpreet Kaur
Pushpendra Singh
author_facet Gayatri Sondhiya
Prakash Tiwari
HV Manjunathachar
Vivek Chouksey
Pradeep Tiwari
Pradip V. Barde
Chandrashekhar G. Raut
Tapas Chakma
Harpreet Kaur
Pushpendra Singh
author_sort Gayatri Sondhiya
collection DOAJ
description Problem considered: Scrub typhus, a re-emerging zoonotic infection, often manifests as acute undifferentiated febrile illness (AUF), posing a significant epidemiological threat in tropical and subtropical regions. Its nonspecific clinical presentation complicates timely diagnosis, increasing the risk of severe morbidity. Understanding its epidemiology and clinical characteristics is crucial for effective disease control, particularly in areas prone to outbreaks. Methods: This prospective cross-sectional study assessed the prevalence and clinical features of scrub typhus through detailed patient history, clinical examination, and commercial IgM ELISA, following DHR guidelines. Results: Among 911 AUF patients from tribal-dominated regions of Madhya Pradesh, India, 22.3% [95% CI: 19.6–25.1] were seropositive for anti- O. tsutsugamushi-specific IgM antibodies, indicating widespread transmission across 17 of 24 districts, particularly in tribal populations, between August 2018 and July 2020. Patient ages ranged from 9 months to 86 years, with 41.2% under 15 years and 35.5% in the working-age group (31–60 years). Notably, 16.7% of seropositive patients exhibited nervous system involvement alongside other clinical signs. Both genders showed similar susceptibility, and 32.3% of seropositive cases reported fever lasting 7–15 days. Peak seropositivity was observed during the monsoon at 38%, followed by the post-monsoon period at 20.4%. Conclusion: This study demonstrates the significant burden of scrub typhus in tribal regions of Madhya Pradesh, India, with high seropositivity during the monsoon and post-monsoon seasons. The association of prolonged fever with organ involvement emphasize the need for early detection, inclusion of scrub typhus in differential diagnoses, and region-specific preventive measures, particularly in endemic areas like Central India.
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spelling doaj-art-c313441c089942acaa02d77ed02c4d0b2025-08-20T02:10:53ZengElsevierClinical Epidemiology and Global Health2213-39842025-05-013310200010.1016/j.cegh.2025.102000Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, IndiaGayatri Sondhiya0Prakash Tiwari1HV Manjunathachar2Vivek Chouksey3Pradeep Tiwari4Pradip V. Barde5Chandrashekhar G. Raut6Tapas Chakma7Harpreet Kaur8Pushpendra Singh9ICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, India; ICMR-National Institute of Traditional Medicine, Belagavi, 590010, Karnataka, India; Faculty of Medical Research, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201,002, India; Corresponding author.ICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, India; ICMR-National Institute of Virology, Central Zone, Jabalpur, 482003, Madhya Pradesh, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, India; Dr. DY Patil Medical College Hospital and Research Centre, Pimpri, Pune, 411018, Maharashtra, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, IndiaIndian Council of Medical Research, Headquarter, New Delhi, 110029, IndiaICMR- National Institute of Research in Tribal Health (NIRTH), Jabalpur, 482003, Madhya Pradesh, India; Faculty of Medical Research, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201,002, India; Corresponding author.Problem considered: Scrub typhus, a re-emerging zoonotic infection, often manifests as acute undifferentiated febrile illness (AUF), posing a significant epidemiological threat in tropical and subtropical regions. Its nonspecific clinical presentation complicates timely diagnosis, increasing the risk of severe morbidity. Understanding its epidemiology and clinical characteristics is crucial for effective disease control, particularly in areas prone to outbreaks. Methods: This prospective cross-sectional study assessed the prevalence and clinical features of scrub typhus through detailed patient history, clinical examination, and commercial IgM ELISA, following DHR guidelines. Results: Among 911 AUF patients from tribal-dominated regions of Madhya Pradesh, India, 22.3% [95% CI: 19.6–25.1] were seropositive for anti- O. tsutsugamushi-specific IgM antibodies, indicating widespread transmission across 17 of 24 districts, particularly in tribal populations, between August 2018 and July 2020. Patient ages ranged from 9 months to 86 years, with 41.2% under 15 years and 35.5% in the working-age group (31–60 years). Notably, 16.7% of seropositive patients exhibited nervous system involvement alongside other clinical signs. Both genders showed similar susceptibility, and 32.3% of seropositive cases reported fever lasting 7–15 days. Peak seropositivity was observed during the monsoon at 38%, followed by the post-monsoon period at 20.4%. Conclusion: This study demonstrates the significant burden of scrub typhus in tribal regions of Madhya Pradesh, India, with high seropositivity during the monsoon and post-monsoon seasons. The association of prolonged fever with organ involvement emphasize the need for early detection, inclusion of scrub typhus in differential diagnoses, and region-specific preventive measures, particularly in endemic areas like Central India.http://www.sciencedirect.com/science/article/pii/S2213398425000892Scrub typhusOrientia tsutsugamushiSeroprevalenceCentral IndiaMadhya PradeshZoonoses
spellingShingle Gayatri Sondhiya
Prakash Tiwari
HV Manjunathachar
Vivek Chouksey
Pradeep Tiwari
Pradip V. Barde
Chandrashekhar G. Raut
Tapas Chakma
Harpreet Kaur
Pushpendra Singh
Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India
Clinical Epidemiology and Global Health
Scrub typhus
Orientia tsutsugamushi
Seroprevalence
Central India
Madhya Pradesh
Zoonoses
title Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India
title_full Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India
title_fullStr Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India
title_full_unstemmed Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India
title_short Emergence of scrub typhus-associated neurological signs in central India: An unusual manifestation in febrile illness cases in Madhya Pradesh, India
title_sort emergence of scrub typhus associated neurological signs in central india an unusual manifestation in febrile illness cases in madhya pradesh india
topic Scrub typhus
Orientia tsutsugamushi
Seroprevalence
Central India
Madhya Pradesh
Zoonoses
url http://www.sciencedirect.com/science/article/pii/S2213398425000892
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