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The objective of this study is primarily to compare the performance of the VIDAS(®) Measles immunoglobulin (Ig)G assay to that of two other serological assays using an immunoassay technique, Enzygnost(®) Anti-measles Virus/IgG (Siemens) and Measles IgG CAPTURE EIA(®) (Microimmune). The sensitivity and the agreement of the VIDAS(®) Measles IgG assay compared to the Enzygnost(®) Anti-measles Virus/IgG assay and the Measles IgG CAPTURE EIA(®) assay are 100%, 97.2% and 99.0%, 98.4%, respectively. The very low number of negative sera for IgG antibodies does not allow calculation of specificity. As a secondary objective, we have evaluated the ability of the VIDAS(®) Measles IgG assay to measure anti-measles virus IgG antibody avidity with the help of the VIDAS(®) CMV IgG Avidity reagent, using 76 sera from subjects with measles and 238 other sera. Different groups of populations were analyzed. In the primary infection measles group, the mean IgG avidity index was 0.16 (range of 0.07 to 0.93) compared to 0.79 (range of 0.25 to 1) in the serum group positive for IgG antibodies and negative for IgM. These data allow to define a weak anti-measles virus IgG antibody avidity as an avidity index (AI) < 0.3 and a strong avidity as an AI > 0.6. The VIDAS(®) Measles IgG assay has a performance equivalent to that of other available products. Its use, individual and quick, is well adapted to testing for anti-measles immunity in exposed subjects.
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http://dx.doi.org/10.3390/v8080234 | DOI Listing |
Hum Vaccin Immunother
December 2025
Department of Planned Immunization, Chaoyang District Centre for Disease Control and Prevention, Beijing, China.
Mumps is a vaccine-preventable disease. Following Beijing's implementation of a three-dose MMR vaccination strategy, incidence rates declined significantly. However, the current 21-d quarantine period lacks evidence-based support, resulting in low compliance and conflicts between healthcare providers and patients.
View Article and Find Full Text PDFZhonghua Yi Xue Za Zhi
September 2025
Department of Expanded Program on Immunization, Hangzhou Center for Diseases Control and Prevention (Hangzhou Health Supervision Institution), Hangzhou 310021, China.
To dynamically monitor the changes in measles antibody levels in children with tumors pre-and post-chemotherapy, and to evaluate the necessity of revaccination with measles-containing vaccines post-chemotherapy A prospective cohort study was conducted. Children with tumors under 15 years old who were hospitalized in the Children's Hospital, Zhejiang University School of Medicine from January 2022 to December 2023 were included as the case group; healthy children of the same age from the community during the same period were included as the control group. Blood samples were collected from the case group before chemotherapy and at 1 month and 6 months after chemotherapy, as well as from the control group.
View Article and Find Full Text PDFFront Immunol
September 2025
Department of Expanded Program on Immunization, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, Jiangsu, China.
Objective: This study evaluated trends in population immunity against measles, rubella, mumps, and varicella in Suqian City (2005-2024) using serological surveys (2019-2024) and incidence data, incorporating participants with known/unknown vaccination statuses to explore immunity dynamics amid evolving policies, and inform public health planning.
Methods: Serum samples from 541 (2019) and 506 (2024) healthy participants were analyzed for virus-specific IgG antibodies using ELISA. Disease incidence data were obtained from China's National Notifiable Disease Reporting System.
World J Clin Pediatr
September 2025
Hospital Pediatry, Saint-Petersburg State Pediatric Medical University, Saint-Petersburg 194100, Russia.
Background: Patients with inflammatory bowel diseases (IBD) often miss the scheduled vaccines and have a higher risk of infection susceptibility, including vaccine-prevented diseases.
Aim: To evaluate the vaccine coverage and levels of the post-vaccine antibodies against measles, mumps, rubella, and hepatitis B in children with IBD.
Methods: Total 98 patients: 46 females (47.
JAMA Netw Open
August 2025
Mayo Clinic Vaccine Research Group, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota.
Importance: India's goal of measles elimination remains unmet, as evidenced by significant recent outbreaks.
Objective: To identify seroprevalence rates among vaccinated children and to examine demographic factors that influence antibody responses.
Design, Setting, And Participants: This cross-sectional study included a highly vaccinated cohort of Indian children from the states of Kerala and Tamil Nadu between 2018 and 2023.