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  • MMR vaccine dosage...

MMR vaccine dosage does not provide herd immunity in mumps outbreak, Finds study

Dr. Nandita MohanBy Dr. Nandita MohanPublished On 2021-02-19T14:45:30+05:30  |  Updated On 2021-02-19T14:51:41+05:30
MMR vaccine dosage does not provide herd immunity in mumps outbreak, Finds study

Recent research revealed that a single dose of MMR vaccine does not provide effective (>90%) seroconversion required for successful herd immunity to prevent mumps outbreak, according to a study published in the Indian Pediatrics. Mumps is a vaccine-preventable viral respiratory illness mainly in the pediatric age group. Epididymo-orchitis is the most common complication...

Recent research revealed that a single dose of MMR vaccine does not provide effective (>90%) seroconversion required for successful herd immunity to prevent mumps outbreak, according to a study published in the Indian Pediatrics.

Mumps is a vaccine-preventable viral respiratory illness mainly in the pediatric age group. Epididymo-orchitis is the most common complication and meningoencephalitis is the most common cause of mortality in mumps. Sporadic outbreaks of mumps are reported from India and other countries indicating a resurgence of the disease in both vaccinated and unvaccinated populations. Outbreaks in vaccinated young adults indicate waning of immunity with time.

Considering the paucity of data regarding sero-protectiveness in children against mumps, Bhoomika Saxena and colleagues from the Department of Microbiology and Pediatrics, University College of Medical Sciences and Guru Tegbahadur hospital, Delhi, India carried out the study to compare the level of mumps specific antibodies in MMR vaccinated and vaccine naive healthy children.

The authors conducted this cross-sectional study was conducted at a tertiary-care public hospital in Delhi among 78 healthy children aged 16 month-12 years attending the pediatric outpatient department. Serum igg and IgM rubella antibodies were measured by Elisa for confirmation of MMR vaccination status. Qualitative determination of IgG mumps was done followed by the quantitative determination in samples positive for igg mumps antibodies.

The study revealed that the IgG mumps was present in 69.2% of the study population, with seroprotective titers in 32% taking endpoint titer as 1:4. Among MMR vaccinated children, 41.1% were sero-protected and in MMR vaccine naïve children 9.1% were seroprotected for mumps.

Low rate of seroprotection among MMR vaccinated children can be attributed to failure of development of immunity with a single dose of vaccine or failure of vaccine uptake. Rate of subclinical infection and atypical presentation in mumps are known to be very high.

Hence, a single dose of MMR vaccine does not provide effective (>90%) seroconversion required for successful herd immunity to prevent mumps outbreak, the authors concluded.

MMR vaccine mumps herd immunity mumps outbreak Indian Pediatrics 
Source : Indian Pediatrics
Dr. Nandita Mohan
Dr. Nandita Mohan

    Dr. Nandita Mohan is a practicing pediatric dentist with more than 5 years of clinical work experience. Along with this, she is equally interested in keeping herself up to date about the latest developments in the field of medicine and dentistry which is the driving force for her to be in association with Medical Dialogues. She also has her name attached with many publications; both national and international. She has pursued her BDS from Rajiv Gandhi University of Health Sciences, Bangalore and later went to enter her dream specialty (MDS) in the Department of Pedodontics and Preventive Dentistry from Pt. B.D. Sharma University of Health Sciences. Through all the years of experience, her core interest in learning something new has never stopped.

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