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ORIGINAL ARTICLE
Year : 2014  |  Volume : 139  |  Issue : 5  |  Page : 773-775

Low vaccine efficacy of mumps component among MMR vaccine recipients in Chennai, India


Department of Microbiology, Dr ALM PG Institute of Basic Medical Sciences, University of Madras, Chennai, India

Correspondence Address:
Thangam Menon
Director Professor & Head, Department of Microbiology, Dr. ALM Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani Campus, Chennai 600 113
India
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Source of Support: None, Conflict of Interest: None


PMID: 25027089

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Introduction of MMR vaccine was believed to have resulted in a decline in the incidence of measles, mumps and rubella infections. However, recent reports suggest the re-emergence of mumps infection worldwide in the vaccinated populations. It was proposed that the reason for this re-emergence was poor efficacy of MMR vaccine. The present study was aimed to investigate mumps infection in MMR vaccinated and non-vaccinated populations in Chennai, India. Blood samples were collected from acute mumps cases (n=74, 42<12 yr age, 54% males) and investigated for IgM antibody against mumps, IgG antibody against measles, mumps and rubella viruses by ELISA. Sixty seven (91%) patients had received MMR vaccine. All the 67 vaccinated cases were positive for parotitis, and mumps IgM. However, only 10 (15%) were positive for IgG. All samples (100%) were positive for rubella and measles IgG. These findings showed the occurrence of mumps infection among MMR vaccinated individuals in Chennai, India. The MMR vaccine failed to generate anti-mumps IgG. The reason may be low vaccine efficacy of the mumps component of the MMR vaccine used.


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