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COVID-19 Vaccine Booster Dose Fails to Enhance Antibody Response to Omicron Variant in Reinfected Healthcare Workers.
Viruses
January 2025
Department of Microbiology, Clínica Universidad de Navarra, 31008 Pamplona, Spain.
The emergence of new variants and diverse vaccination regimens have raised uncertainty about vaccine effectiveness against SARS-CoV-2. This study aims to investigate the impact of Omicron primo-/reinfection and primary vaccination schedules on the immunogenicity of an mRNA-based booster dose over a six-month period. We conducted a prospective cohort study to assess the durability and level of antibodies of 678 healthcare workers fully vaccinated against COVID-19.
View Article and Find Full Text PDFThe present study aimed to evaluate the vaccine effectiveness (VE) of different doses of an inactivated coronavirus disease 2019 (COVID-19) vaccine against Omicron BA.2.2 infection in Beijing, China, 2022.
View Article and Find Full Text PDFComparison of Long-Term Antibody Titers in Calves Treated with Different Conjunctival and Subcutaneous S19 Vaccines.
Animals (Basel)
January 2025
Department of Microbiology, Faculty of Veterinary Medicine, Selcuk University, 42130 Konya, Turkey.
Brucellosis is still the most common zoonosis worldwide despite advanced technology and animal husbandry. Since there is still no effective vaccine for humans, it is crucial to control the disease in ruminants through eradication and vaccination. Although some countries around the world have achieved this circumstance, every country aims to become free of Brucellosis through vaccination, animal movements, and various eradication measures.
View Article and Find Full Text PDFAssessing the use of geospatial data for immunization program implementation and associated effects on coverage and equity in the Democratic Republic of Congo.
BMC Public Health
January 2025
Gavi, The Vaccine Alliance, Geneva, Switzerland.
Background: The National Expanded Program on Immunization in the Democratic Republic of the Congo implemented a program in 9 Provinces to generate georeferenced immunization microplans to strengthen the planning and implementation of vaccination services. The intervention aimed to improve identification and immunization of zero-dose children and overall immunization coverage.
Methods: This study applies a mixed-methods design including survey tools, in-depth interviews and direct observation to document the uptake, use, and acceptance of the immunization microplans developed with geospatial data in two intervention provinces and one control province from February to June 2023.
Pediatric COVID-19 severity by SARS-CoV-2 lineage and vaccine status in Canada: an IMPACT study.
Pediatr Res
January 2025
Centre for Global Child Health, The Hospital for Sick Children, Toronto, ON, Canada.
Background: Interpretations of pediatric COVID-19 severity are complicated by novel lineages and COVID-19 vaccine introduction. We estimated the risk of severe COVID-19 by SARS-CoV-2 lineage and vaccination status among hospitalized Canadian children.
Methods: Data were collected through the Canadian Paediatric Surveillance Program (April 2020-May 2021) and Canadian Immunization Monitoring Program, ACTive (June 2021-December 2022).
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