ETIOLOGICAL PROFILE OF FEVER OF SHORT DURATION WITHOUT FOCUS IN CHILDREN AGED 1–36 MONTHS: A TERTIARY CARE HOSPITAL-BASED STUDY
DOI:
https://doi.org/10.69980/ajpr.v29i1.830Keywords:
Fever without focus, Serious bacterial infection, Urinary tract infection, Bacteremia, PediatricsAbstract
Background: Fever without focus (FWS) in children aged 1–36 months presents a significant diagnostic challenge to pediatricians. Although most cases are due to self-limiting viral infections, a subset represents serious bacterial infections (SBI), including urinary tract infections (UTI), bacteremia, pneumonia, meningitis, and enteric fever. Early identification is essential to prevent morbidity and mortality while avoiding unnecessary hospitalization and antibiotic exposure.
Objectives: To determine the etiological profile of fever of short duration (<7 days) without localizing signs in children aged 1–36 months and to identify common organisms causing septicemia and urinary infections.
Methods: This prospective observational study was conducted in a tertiary care hospital. Children aged 1–36 months presenting with fever ≥38°C without identifiable focus on clinical examination were enrolled. Detailed clinical evaluation and laboratory investigations including complete blood count, blood culture, urine analysis and culture, chest radiography, cerebrospinal fluid analysis (when indicated), and serological tests were performed.
Results: The majority of cases were viral or self-limiting illnesses. Among serious bacterial infections, urinary tract infection was the most common cause, followed by bacteremia and pneumonia. Escherichia coli was the predominant organism in urine cultures, while Streptococcus pneumoniae and Staphylococcus aureus were common isolates in blood cultures. Younger infants had a higher incidence of serious bacterial infection.
Conclusion: While most cases of fever without focus are benign, urinary tract infection remains the most frequent serious bacterial infection in children 1–36 months. Rational use of investigations and close follow-up are crucial to balance early diagnosis and antimicrobial stewardship.
References
1. Venkat Ramanan P, Arunprasath TS. Fever without focus in children aged 1 to 36 months—Aetiological profile and predictors of specific aetiology: a prospective observational study. Infect Epidemiol Microbiol. 2022;8(1):61-68. doi:10.52547/iem.8.1.61 (iem.modares.ac.ir)
2. Graaf S, Moll HA, Oostenbrink R. Fever without a source in children: an international comparison of guidelines. BMJ Paediatr Open. 2022;6:e001488. (PMC)
3. Pantell RH, Roberts KB, Adams WG, et al. Evaluation and management of well-appearing febrile infants 8 to 60 days old. Pediatrics. 2021;148(2):e2021052228. (PubMed)
4. National Institute for Health and Care Excellence (NICE). Fever in under 5s: assessment and initial management (NG143). 2019 (updated). (nice.org.uk)
5. Mahajan P, Batra P, Thakur N, et al. Consensus guidelines on evaluation and management of the febrile child presenting to the emergency department in India. Indian Pediatr. 2017;54(8):652-660. (PubMed)
6. Abhilash KPP, Jeevan JA, Mitra S, et al. Acute undifferentiated febrile illness in patients presenting to a tertiary care hospital in South India: clinical spectrum and outcome. J Glob Infect Dis. 2016;8(4):147-154. doi:10.4103/0974-777X.192966. (PubMed)
7. Mørch K, Manoharan A, Chandy S, et al. Acute undifferentiated fever in India: a multicentre study of aetiology and diagnostic accuracy. BMC Infect Dis. 2017;17:665. doi:10.1186/s12879-017-2764-3. (PubMed)
8. Kaufman J, Temple-Smith M, Sanci L. Urinary tract infections in children: diagnosis and management. BMJ. 2019;367:l570. (PMC)
9. Phasuk N, Kittitrakul C, Suphanchaimat R, et al. Etiology, treatment, and outcome of children aged 3 to 36 months with fever without a source. Glob Pediatr Health. 2020;7:2333794X20915404. doi:10.1177/2333794X20915404. (SAGE Journals)
10. Norman-Bruce H, Watson D, Ioannou A, et al. Diagnostic test accuracy of procalcitonin and C-reactive protein for invasive/serious bacterial infections in febrile infants. Lancet Child Adolesc Health. 2024. (The Lancet)
11. World Health Organization. Integrated Management of Childhood Illness (IMCI). WHO. (World Health Organization)
12. National Center for Vector Borne Diseases Control (NCVBDC), MoHFW, India. National Guidelines for Clinical Management of Dengue Fever 2023. (ncvbdc.mohfw.gov.in)
13. Tayal A, Kalra BS, Agarwal S. Management of dengue: an updated review. Cureus. 2022. (PMC)
14. Khairkar M, et al. Review on scrub typhus: an important etiology of acute undifferentiated febrile illness in India. Cureus/Review (PMC). 2023. (PMC)
15. Devamani C, et al. Incidence of scrub typhus in rural South India. N Engl J Med. 2025. doi:10.1056/NEJMoa2408645. (New England Journal of Medicine)
16. John J, et al. Burden of typhoid and paratyphoid fever in India. N Engl J Med. 2023;388(16):1491-1500. doi:10.1056/NEJMoa2209449. (PubMed)
17. (GBD-style estimate) The global burden of enteric fever, 2017–2021. Lancet eClinicalMedicine. 2024. (The Lancet)
18. Incidence of enteric fever in a pediatric cohort in North India. Open Forum Infect Dis (PMC). 2022. (PMC)
19. Mørch K, et al. Clinical features and risk factors for death in acute undifferentiated fever. Trans R Soc Trop Med Hyg. 2023;117(2):91-??. (OUP Academic)
20. UCSF Benioff Children’s Hospitals. Consensus guidelines for febrile infants 0–90 days of age (risk stratification). 2023. (medconnection.ucsfbenioffchildrens.org)
21. EB Medicine. Fever in children aged 3 to 36 months (emergency medicine review). 2022. (ebmedicine.net)
22. Sutiman N, et al. Protocol: diagnostic performance of C-reactive protein and procalcitonin for serious/invasive bacterial infections in children with fever without apparent source. BMJ Paediatr Open. 2024;8:e002237. (BMJ Paediatrics Open)
23. Rajan N, et al. Effectiveness of WHO dengue management protocol in children (implementation/outcomes). J Pediatr Crit Care. 2021. (Lippincott Journals)
24. Mittal/others. Scrub typhus in children: prospective observational study in a tertiary care hospital in eastern India. Cureus. 2023. (Cureus)
25. Paul SP, et al. NICE guideline review: fever in under 5s (NG143)—assessment and initial management. Arch Dis Child Educ Pract Ed. 2022;107(3):212-?. (BMJ Evidence-Based Medicine)
Downloads
Published
Issue
Section
License
Copyright (c) 2026 American Journal of Psychiatric Rehabilitation

This work is licensed under a Creative Commons Attribution 4.0 International License.
This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International License permitting all use, distribution, and reproduction in any medium, provided the work is properly cited.
