The feasibility of a purified, inactivated vaccine (PIV) against dengue type 2 (DEN-2) virus was explored. Dengue-2 virus strain 16681 was used for producing a monotypic PIV. Virus adapted to fetal rhesus lung (FRhL-2) cells was harvested from roller bottle culture supernatant fluids, concentrated, and purified on sucrose gradients. Analysis of purified virus preparations by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and Western blotting showed primarily envelope (E) and premembrane (prM) antigens. These preparations had a purity, estimated from silver-stained gels, of approximately 70%, and a yield, based on recovery of virus and viral antigen, of 10-20%. The purified virus was inactivated with 0.05% formalin at 22 degrees C, or alternatively, with 7 mRads from a 60Co source. Vaccinated mice developed high titers of anti-DEN-2 virus neutralizing antibody and were partially protected from virus challenge. These results warrant further testing and development of PIVs for the other DEN virus serotypes.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.4269/ajtmh.1996.55.504 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Identification of novel rodent and shrew orthohepeviruses sheds light on hepatitis E virus evolution.
Zool Res
January 2025
Institute of Preventive Medicine, School of Public Health, Dali University, Yunnan Key Laboratory of Screening and Research on Anti-pathogenic Plant Resources from Western Yunnan, Yunnan Key Laboratory of Zoonotic Disease Cross-border Prevention and Quarantine, Dali, Yunnan 671000, China. E-mail:
The family has seen an explosive expansion in its host range in recent years, yet the evolutionary trajectory of this zoonotic pathogen remains largely unknown. The emergence of rat hepatitis E virus (HEV) has introduced a new public health threat due to its potential for zoonotic transmission. This study investigated 2 464 wild small mammals spanning four animal orders, eight families, 21 genera, and 37 species in Yunnan Province, China.
View Article and Find Full Text PDFUrinary lipoarabinomannan for diagnosis of Tuberculosis in an HIV-negative population: A scoping review.
Afr J Prim Health Care Fam Med
December 2024
Department of Internal Medicine, Prince Mshiyeni Memorial Hospital, Durban.
Background: Tuberculosis (TB) remains a leading cause of mortality in low-resource settings and poses a diagnostic challenge in human immunodeficiency virus (HIV)-negative populations because of limitations in traditional diagnostic methods such as sputum smear microscopy (SSM) and sputum Xpert Ultra. There is a lack of effective, non-invasive diagnostic options for TB diagnosis in HIV-negative populations. This scoping review explores the potential of urinary lipoarabinomannan (ULAM) as a point-of-care diagnostic tool for Mycobacterium tuberculosis (MTB) in HIV-negative individuals.
View Article and Find Full Text PDFAn audit of completeness of Road to Health Booklet at a community health centre in South Africa.
Afr J Prim Health Care Fam Med
December 2024
Department of Family Medicine and Primary Health Care, Faculty of Health Sciences, Sefako Makgatho Health Sciences University, Pretoria.
Background: For continuity and quality of care, accurate record-keeping is crucial. Complete care is facilitated by completing a child's Road to Health Booklet (RTHB) as well as prompt interpretation and appropriate action. This could result in a decrease in child morbidity and mortality.
View Article and Find Full Text PDFCOVID-19 impact on HIV PrEP uptake and retention at selected health facilities in Eswatini.
Afr J Prim Health Care Fam Med
December 2024
School of Public Health, Faculty of Community and Health Sciences, University of the Western Cape, Cape Town.
Background: Oral pre-exposure prophylaxis (PrEP) uses antiretroviral medication to reduce HIV risk in HIV-negative individuals. Despite its effectiveness, global uptake faces policy and accessibility challenges. In Eswatini, PrEP introduction in 2017 showed promise despite stigma and COVID-19 disruptions.
View Article and Find Full Text PDFAssessment of Knowledge, Attitude, and Associated Factors of Mpox Among Healthcare Professionals at Debre Tabor Comprehensive Specialized Hospital, Northwest Ethiopia, 2024: A Cross-Sectional Study.
Health Sci Rep
January 2025
Department of Medical Laboratory Science, College of Health Sciences Debre Tabor University Debre Tabor Ethiopia.
Background: Mpox is a zoonotic disease that has become a significant public health concern, especially in regions beyond its usual endemic areas in Africa. The rising global incidence and its classification as a Public Health Emergency of International Concern by the World Health Organization highlight the importance of healthcare professionals (HCPs) being knowledgeable and well-prepared to effectively manage the virus. This study aims to assess the knowledge, attitudes, and factors associated with HCPs regarding Mpox infections at Debre Tabor Comprehensive Specialized Hospital in Northwest Ethiopia.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!