What Is Already Known About This Topic?: The World Health Organization (WHO) varicella vaccines position paper states that countries where varicella is an important public health burden could consider introducing varicella vaccine (VarV) in the routine childhood immunization program (1). VarV has been available for many years in China but is not included in most routine immunization programs in China. As a result, substantial heterogeneity in vaccination coverage exists across regions.
What Is Added By This Report?: In Beijing, adding a second dose of VarV for children and increasing coverage reduced the incidence of varicella. Lowering the age of the first dose of VarV to 12 months could further reduce varicella, especially among toddlers.
What Are The Implications For Public Health Practice?: Governments should use economic analysis to consider inclusion of VarV into the routine children immunization program as a free vaccine and adopting a 2-dose schedule that starts at 12 months of age.
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http://dx.doi.org/10.46234/ccdcw2021.085 | DOI Listing |
Case Rep Gastrointest Med
January 2025
Department of Gastroenterology and Hepatology, Michigan Medicine, Ann Arbor, Michigan, USA.
Novel therapeutics used in the treatment of inflammatory bowel disease pose an increased risk of viral reactivation in patients. We present a case of a patient with refractory Crohn's disease (CD) who developed primary varicella (chickenpox) of a vaccine-viral strain after receiving combination immunosuppression with high-dose corticosteroids, tumor necrosis factor inhibitor (TNFi), and a Janus kinase inhibitor (JAKi) in the hospital. While this patient recovered and did not experience long term adverse effects, her case provides an opportunity for improvement.
View Article and Find Full Text PDFPLOS Glob Public Health
January 2025
MSD LATAM, San José, Costa Rica.
Varicella presents a public health challenge in Guatemala, with limited evidence regarding its impact; vaccine is currently absent from the national immunization program. Generating local data on the economic and health burden can support immunization policies. This study describes the use of hospital resources, costs of care, clinical and demographic characteristics, and complications in children with varicella.
View Article and Find Full Text PDFVaccines (Basel)
January 2025
Vaccine Center, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
Background/objectives: Approved mRNA vaccines commonly use sequences modified with pseudouridine to enhance translation efficiency and mRNA stability. However, this modification can result in ribosomal frameshifts, reduced immunogenicity, and higher production costs. This study aimed to explore the potential of unmodified mRNA sequences for varicella-zoster virus (VZV) and evaluate whether codon optimization could overcome the limitations of pseudouridine modification.
View Article and Find Full Text PDFVaccines (Basel)
January 2025
Institute of Immunization and Prevention, Zhejiang Center for Disease Control and Prevention, Hangzhou 310051, China.
: China has a high incidence rate of varicella yet a low coverage rate of the varicella vaccine (VarV), with safety concerns being a leading cause of the lack of vaccination willingness. This study aimed to describe VarV-related adverse events following immunization (AEFIs) and analyze their characteristics in Zhejiang, China, 2020-2022. : VarV-related AEFIs in Zhejiang Province from 1 January 2020 to 31 December 2022 were collected through the Chinese National AEFI Information System (CNAEFIS) for a descriptive epidemiological analysis.
View Article and Find Full Text PDFVaccines (Basel)
December 2024
Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China.
Seropositivity study of Varicella in Healthy Populations in Guangzhou, China. Infection with varicella-zoster virus (VZV) leads to skin and mucous membranes blisters and the complications can be life threatening. A seroepidemiological study conducted from 2020 to 2022 in Guangzhou, China, aimed to evaluate varicella antibody levels.
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