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Introduction: Kyasanur forest disease (KFD) outbreak was confirmed in Dodamarg Taluka, Sindhudurga district (Maharashtra) in India during the year 2016. The rise in suspected KFD cases was reported in January 2016, peaked during March, and then declined gradually from April 2016. The outbreak was thoroughly investigated considering different socio-clinical parameters.
Methods: Total, 488 suspected KFD cases were investigated using KFD specific real-time RT-PCR and anti-KFDV IgM enzyme-linked immunosorbent assay (ELISA). Sero-epidemiological survey was carried out in the affected area using anti-KFDV IgG ELISA.
Results: Among suspected KFD cases, high age-specific attack rate (105.1 per 1000 persons) was observed in adults (aged 40-59 years). Out of 488 suspected KFD cases, 130 were laboratory confirmed. Of these, 54 cases were KFDV real-time RT-PCR positive, 66 cases were anti-KFDV IgM ELISA positive and 10 cases were positive by both the assays. Case fatality ratio among laboratory-confirmed KFD cases were 2.3% (3/130). Majority of laboratory-confirmed KFD cases (93.1%) had visited Western Ghats forest in Dodamarg for activities like working in cashew nut farms (79.8%), cashew nut fruit collection (76.6%), collection of firewood (68.5%) and dry leaves/grass (40.3%), etc., before the start of symptoms. Common clinical features included fever (100%), headache (93.1%), weakness (84.6%), and myalgia (83.1%). Hemorrhagic manifestations were observed in nearly one-third of the laboratory-confirmed KFD cases (28.5%). A seroprevalence of (9.7%, 72/745) was recorded in KFD-affected area and two neighboring villages (9.1%, 15/165). Serosurvey conducted in Ker village showed clinical to subclinical ratio of 6:1 in KFD-affected areas.
Conclusion: This study confirms the outbreak of KFD Sindhudurg district with 130 cases. Detection of anti-KFDV IgG antibodies among the healthy population in KFD-affected area during the KFD outbreak suggested the past exposure of KFD infection. This outbreak investigation has helped health authorities in adopting KFD vaccination strategy for the population at risk.
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http://dx.doi.org/10.1089/vbz.2017.2129 | DOI Listing |
Reumatismo
August 2025
Division of Rheumatology, Department of Experimental and Clinical Medicine, AOU Careggi, University of Florence.
Kikuchi-Fujimoto disease (KFD) is a rare and benign lymphadenopathy of unknown etiology. Usually, it is an isolated and self-limiting condition requiring no specific therapy; however, in some cases, it may be associated with an autoimmune disease. Here, we report three cases of KFD developing an associated autoimmune connective disorder: the first case presented with Sjögren's syndrome, and the other two had a diagnosis of systemic lupus erythematosus.
View Article and Find Full Text PDFCase Rep Neurol Med
July 2025
Department of Rheumatology, Sengkang General Hospital, Singapore.
We report an uncommon and peculiar case of a patient who developed brainstem encephalitis between three and four months after recovering from an episode of Kikuchi-Fujimoto disease (KFD). She presented acutely with oscillopsia and persistent irrepressible hiccups, for which brainstem stroke was initially suspected. Brain magnetic resonance imaging was negative for ischemic strokes but demonstrated an enhancing T2-hyperintense lesion within the area postrema of the medulla oblongata extending into the upper cervical cord.
View Article and Find Full Text PDFClin Rheumatol
August 2025
Universidad Científica del Sur, Lima, Perú.
Background: The association between SARS-CoV-2 infection, COVID-19 vaccination, and the development of autoimmune diseases such as the Kikuchi-Fujimoto disease (KFD) is currently unknown.
Aims: This study aims to review, synthesize, and analyze the current available evidence on the occurrence of KFD associated with both SARS-CoV-2 infection and COVID-19 vaccination.
Methods: Case report, case series, and observational studies were included.
BMC Pediatr
July 2025
Department of Infectious Diseases, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, National Center for Children's Infectious and Allergic Diseases Surveillance, Beijing Research Center for Respiratory Infectious Diseases, Beijing Key Laboratory of Core
Background: This study was performed to summarize the clinical and laboratory features of children with Kikuchi-Fujimoto disease (KFD). The risk factors of KFD recurrence were analyzed.
Methods: A retrospective case-control study was conducted on children who underwent lymph node biopsy in the department of infectious diseases of Beijing Children's Hospital from April 2018 to April 2022.
Cureus
May 2025
Pathology, Sarojini Naidu Medical College, Agra, IND.
Background: Kikuchi-Fujimoto disease (KFD) is a frequently febrile, self-limited, subacute necrotizing lymphadenitis. It occurs predominantly in young females and is more common in Asia.
Aim: This study aims to characterize the cytomorphological spectrum of KFD through fine-needle aspiration (FNA) findings across multiple centers, highlight under-recognized diagnostic features, and refine cytologic differentials to improve diagnostic accuracy.