We succeeded in isolating human rotaviruses from the feces of gastroenteritis patients by using roller cultures of primary cynomolgus monkey kidney cells with trypsin in the maintenance medium but without concentration and trypsin treatment of the inocula at each passage level. These cells were found to be more sensitive than MA-104 cells (derived from fetal rhesus monkey kidney) for the propagation of human rotaviruses. Polyacrylamide gel electrophoresis of the genome RNA revealed that there were small differences in the migration pattern of the segments among all the strains isolated from 1976 to 1981. The cultivation of human rotaviruses in primary cell cultures might aid in developing a liver rotavirus vaccine.
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http://dx.doi.org/10.1128/jcm.16.2.387-390.1982 | DOI Listing |
Sci Adv
January 2025
Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX 77030, USA.
Viruses engage in a variety of processes to subvert host defenses and create an environment amenable to replication. Here, using rotavirus as a prototype, we show that calcium conductance out of the endoplasmic reticulum by the virus encoded ion channel, , induces intercellular calcium waves that extend beyond the infected cell and contribute to pathogenesis. Viruses that lack the ability to induce this signaling show diminished viral shedding and attenuated disease in a mouse model of rotavirus diarrhea.
View Article and Find Full Text PDFBMC Med Inform Decis Mak
January 2025
Kenya Medical Research Institute- Center for Global Health Research (KEMRI-CGHR), P.O Box 1578-40100, Kisumu, Kenya.
Background: Despite the adverse health outcomes associated with longer duration diarrhea (LDD), there are currently no clinical decision tools for timely identification and better management of children with increased risk. This study utilizes machine learning (ML) to derive and validate a predictive model for LDD among children presenting with diarrhea to health facilities.
Methods: LDD was defined as a diarrhea episode lasting ≥ 7 days.
Vaccine
January 2025
Division of Viral Diseases, Centers for Disease Control and Prevention, Atlanta, GA, USA. Electronic address:
Background: The underlying causes for lower rotavirus vaccine effectiveness (VE) in high-child-mortality settings are not well understood. Uganda introduced the human monovalent G1P[8] rotavirus vaccine (Rotarix) in June 2018. We determined the effectiveness of Rotarix against rotavirus diarrhea requiring hospital care among Ugandan children.
View Article and Find Full Text PDFEpidemiol Serv Saude
January 2025
Universidade de BrasÃlia, BrasÃlia, DF, Brazil.
Objective: To estimate and compare vaccination coverage among children born in 2017-2018 in São Paulo and Campinas, according to the Vaccination Coverage Survey (ICV 2020) and the National Immunization Program Information System (SI-PNI).
Methods: ICV 2020 analyzed vaccination card records. Coverage was calculated and compared to doses recorded on the SI-PNI, divided by the target population.
Vaccine
January 2025
Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China; Key Laboratory of Public Health Safety of Ministry of Education, Fudan University, Shanghai, China. Electronic address:
Objectives: The number of post-marketing studies assessing the vaccine effectiveness (VE) of the Lanzhou lamb rotavirus vaccine (LLR, licensed in 2000 exclusively in China) and the oral human attenuated pentavalent rotavirus vaccine (RotaTeq, licensed in China in 2018) in China is limited.
Methods: A test-negative case-control study based on prospective surveillance was conducted among diarrhea patients aged 5Â years and younger at five hospitals in Shanghai, China. Cases and controls were defined based on the results of real-time fluorescent quantitative reverse transcription polymerase chain reaction (rRT-PCR) of fecal samples for rotavirus.
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