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Vaccination against SARS-CoV-2 provides low-level cross-protection against common cold coronaviruses in mouse and non-human primate animal models.
J Virol
January 2025
Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada.
The common cold coronaviruses are a source of ongoing morbidity and mortality particularly among elderly and immunocompromised individuals. While cross-reactive immune responses against multiple coronaviruses have been described following severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection and vaccination, it remains unclear if these confer any degree of cross-protection against the common cold coronaviruses. A recombinant fowl adenovirus vaccine expressing the SARS-CoV-2 spike protein (FAdV-9-S19) was generated, and protection from SARS-CoV-2 challenge was shown in K18-hACE2 mice.
View Article and Find Full Text PDFDefining the Critical Requisites for Accurate Simulation of SARS-CoV-2 Viral Dynamics: Patient Characteristics and Data Collection Protocol.
J Med Virol
January 2025
Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore, Singapore.
Mathematical models of viral dynamics are crucial in understanding infection trajectories. However, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral load data often includes limited sparse observations with significant heterogeneity. This study aims to: (1) understand the impact of patient characteristics in shaping the temporal viral load trajectory and (2) establish a data collection protocol (DCP) to reliably reconstruct individual viral load trajectories.
View Article and Find Full Text PDFLongitudinal Follow-Up of the Specific Antibody Response to SARS-CoV-2 Vaccination in Colombia.
J Med Virol
January 2025
Centro Internacional de Vacunas, Cali, Colombia.
A total of 5011 adult volunteers attending vaccination centers in different regions of Colombia were enrolled in a 1-year prospective observational cohort study to evaluate the immunogenicity and effectiveness of SARS-CoV-2-based vaccines as part of a National Vaccine Program established to contain the COVID-19 pandemic. Following informed consent, 5,011 participants underwent a sociodemographic survey and PCR testing to assess SARS-CoV-2 infection. Blood samples were collected, and serum fractions were obtained from a participant subsample (n = 3441) at six-time points to assess virus-specific IgG responses to the Spike protein, its Receptor Binding Domain, and the Nucleoprotein by ELISA.
View Article and Find Full Text PDFImmunomodulatory properties of extracellular vesicles containing the Spike protein of SARS-CoV-2.
Front Parasitol
April 2024
INRS- Centre Armand-Frappier Santé Biotechnologie, Université du Québec, Laval, QC, Canada.
Extracellular vesicles released by the protozoan parasite display immunomodulatory properties towards mammalian immune cells. In this study, we have evaluated the potential of extracellular vesicles derived from the non-pathogenic protozoan towards the development of a vaccine adjuvant. As a proof of concept, we expressed in a codon-optimized SARS-CoV-2 Spike protein fused to the secreted acid phosphatase signal peptide in the N-terminal and to a 6×-His stretch in the C-terminal.
View Article and Find Full Text PDFUnderstanding Adoption of Electronic Medical Records (EMRs) during a Health Emergency: An Analysis of EMR Usage Logs from Rural Health Facilities in the Philippines.
Acta Med Philipp
December 2024
Department of Physics, School of Science and Engineering, Ateneo de Manila University, Quezon City, Philippines.
Background And Objective: The adoption of electronic medical records (EMRs) in the Philippines has been initiated and adjusted since the last decade through the Philippine eHealth Agenda framework. EMRs are known to improve clinical management and have been widely adopted in advanced economies. However, empirical research on EMR implementation remains limited.
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