One hundred and fifty cases of Japanese encephalitis (JE) in children below 12 years of age admitted to the Headquarters Hospital, Bellary Medical College during October, 1986 to January, 1987 were studied. The youngest child affected was 1 year old. The ratio of male to female was 2:1. Hindu patients (93.33%) were significantly more than Muslim patients (6.6%). The average duration of illness prior to hospitalisation was 4.2 days (SD +/- 1.9 days). Fever, headache and/or vomiting were common presenting symptoms at the onset of illness. Onset of illness was acute or sub-acute in 105 cases (70%). CSF examination showed pleocytosis with lymphocytic reaction and normal sugar. Japanese encephalitis virus was isolated from the brain biopsy tissue in one case and the seropositivity rate for JE was 50%. The mortality was 26% and was directly related to younger age, longer duration of illness prior to admission and deeper grade of coma at the time of admission. Moderate to severe sequalae were seen in 31 patients (28.82%). The mean duration of hospital stay was 8 days.
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JMIR Public Health Surveill
January 2025
School of Public Health, National Defense Medical Center, Taipei City, Taiwan.
Background: Japanese encephalitis (JE) is a zoonotic parasitic disease caused by the Japanese encephalitis virus (JEV), and may cause fever, nausea, headache, or meningitis. It is currently unclear whether the epidemiological characteristics of the JEV have been affected by the extreme climatic conditions that have been observed in recent years.
Objective: This study aimed to examine the epidemiological characteristics, trends, and potential risk factors of JE in Taiwan from 2008 to 2020.
Parasit Vectors
January 2025
Centre for Snakebite Research and Interventions, Liverpool School of Tropical Medicine, Liverpool, UK.
Mosquitoes are responsible for the transmission of numerous pathogens, including Plasmodium parasites, arboviruses and filarial worms. They pose a significant risk to public health with over 200 million cases of malaria per annum and approximately 4 billion people at risk of arthropod-borne viruses (arboviruses). Mosquito populations are geographically expanding into temperate regions and their distribution is predicted to continue increasing.
View Article and Find Full Text PDFPLoS Negl Trop Dis
January 2025
Research Center for Swine Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China.
Background: The Japanese encephalitis virus (JEV), a mosquito-borne flavivirus, is known for its capacity to cause severe neurological disease in Asia. Neurotropic flaviviruses within the Japanese encephalitis (JE) serogroup possess the distinctive feature of expressing a unique nonstructural protein, NS1'. The NS1' protein consists of the full NS1 protein with an additional 52 amino acid extension at the C-terminus and has been demonstrated to exhibit virulence in mammalian hosts upon infection.
View Article and Find Full Text PDFJapanese encephalitis (JE) is a zoonotic disease caused by the Japanese encephalitis virus (JEV), belonging to the family. Diagnosis of Japanese encephalitis (JE) based on clinical signs alone is challenging due to the high proportion of subclinical cases. The Plaque Reduction Neutralization Test (PRNT) is considered the gold standard for detecting JE-specific antibodies because of its high specificity.
View Article and Find Full Text PDFViruses
January 2025
Department of Microbiology and Immunology, Miller School of Medicine, University of Miami/UHealth, Miami, FL 33136, USA.
Flaviviruses are a diverse group of viruses primarily transmitted through hematophagous insects like mosquitoes and ticks. Significant expansion in the geographic range, prevalence, and vectors of flavivirus over the last 50 years has led to a dramatic increase in infections that can manifest as hemorrhagic fever or encephalitis, leading to prolonged morbidity and mortality. Millions of infections every year pose a serious threat to worldwide public health, encouraging scientists to develop a better understanding of the pathophysiology and immune evasion mechanisms of these viruses for vaccine development and antiviral therapy.
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