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ORIGINAL ARTICLE
Year : 2016  |  Volume : 5  |  Issue : 3  |  Page : 658-662

Prevalence of rubella-specific IgG antibodies in unimmunized young female population


1 Department of Community Medicine, Government Medical College, Calicut, Kerala, India
2 Apartment 206, 10300 W, Blue Mount Road, Wisconsin, USA
3 Department of Microbiology, Government Medical College, Calicut, Kerala, India
4 Department of Community Medicine, KAP Viswanathan Government Medical College, Trichy, Tamil Nadu, India

Correspondence Address:
Jayakrishnan Thayyil
Department of Community Medicine, Government Medical College, Calicut - 673 008, Kerala
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2249-4863.197311

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Context: Rubella is a mild self-limiting disease all over the world; nevertheless, it is of significant public health importance due to its teratogenic effect of congenital rubella syndrome. Rubella vaccine is currently not included in the national immunization program in India. Rubella-specific IgG in the unvaccinated population is a marker of previous rubella infection. Rubella IgG estimation in children will provide data for initiation and necessary modification to the immunization strategy. Aims: In this background, this study was conducted with an aim to know the age-specific susceptibility of acquiring rubella infections and future risk of congenital rubella syndrome (CRS) among girls. Settings and Design: This was a community-based, observational study. Participants and Methods: The study was conducted at a randomly selected rural area Mavoor Panchayath of Kozhikode District, Kerala, among adolescent girls. The estimation of rubella-specific IgG antibody was done by quantitative enzyme-linked immunosorbent assay method. IgG titer value of >15 IU was taken positive, 8-15 IU as equivocal, and <8 IU as negative. Statistical Analysis Used: Statistical analysis was performed using Statistical program for Social science version 16 for Windows. Chi-square test was applied to find out significant difference and Fisher's exact test wherever applicable. Results: The data and blood sample collection was done from 250 girls. The mean IgG titer was 151.93 ± 128.78 IU, and as per the criteria, 68.3% were positive, 28.5% were negative, and 3.2% were equivocal. At this age, majority (68.3%) of the girls get protection by natural infection without any vaccine. Some girls (32%) may remain susceptible to infection during adulthood and pregnancy. Conclusions: Natural rubella infection was widely prevalent among child population and at this age. An immunization policy recommending rubella-containing vaccine is highly desirable to prevent rubella and CRS.


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