Mumps Outbreaks in Vaccinated Populations —Is It Time to Re-assess the Clinical Efficacy of Vaccines?

History illustrates the remarkable public health impact of mass vaccination, by dramatically improving life expectancy and reducing the burden of infectious diseases and co-morbidities worldwide. It has been perceived that if an individual adhered to the MMR vaccine schedule that immunity to mumps virus (MuV) would be lifelong. Recent mumps outbreaks in individuals who had received two doses of the Measles Mumps Rubella (MMR) vaccine has challenged the efficacy of the MMR vaccine. However, clinical symptoms, complications, viral shedding and transmission associated with mumps infection has been shown to be reduced in vaccinated individuals, demonstrating a benefit of this vaccine. Therefore, the question of what constitutes a good mumps vaccine and how its impact is assessed in this modern era remains to be addressed. Epidemiology of the individuals most affected by the outbreaks (predominantly young adults) and variance in the circulating MuV genotype have been well-described alluding to a collection of influences such as vaccine hesitancy, heterogeneous vaccine uptake, primary, and/or secondary vaccine failures. This review aims to discuss in detail the interplay of factors thought to be contributing to the current mumps outbreaks seen in highly vaccinated populations. In addition, how mumps diagnoses has progressed and impacted the understanding of mumps infection since a mumps vaccine was first developed, the limitations of current laboratory tests in confirming protectio...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research

Related Links:

r U Abstract Measles outbreaks occur rather frequently in Germany. Patients with chronic inflammatory diseases are often treated with immunosuppressants. A recent study showed that about 7% of such patients are not protected against measles according to the lack of documentation in the vaccination card or the absence of protective antibodies. The Standing Committee on Immunization (STIKO) recommends a first vaccination against measles as a measles-mumps-rubella combined vaccination (MMR) in children aged 11-14 months and a second vaccination at 14-23 months. For adults born after 1970, vaccination against measles ...
Source: Zeitschrift fur Rheumatologie - Category: Rheumatology Authors: Tags: Z Rheumatol Source Type: research
AbstractVaccine hesitancy is an increasing global health threat but much of the recent research has centred on the USA. European countries provide an interesting context due to increases in vaccine-preventable disease outbreaks as well as variability in vaccination laws. We investigated the spatiotemporal clustering of Measles, Mumps, and Rubella vaccination coverage in Germany, a country with a historic absence of compulsory vaccination laws. We also examined measles incidence in the context of the spatiotemporal clustering results. While we did not identify strong spatial patterns of geographic clustering in Germany, our...
Source: The European Journal of Public Health - Category: General Medicine Source Type: research
Abstract In August 2019, 30 attendees at a Nebraska wedding developed mumps after being exposed to one asymptomatic index patient who was fully vaccinated according to Advisory Committee on Immunization Practices (ACIP) recommendations (1), resulting in a multistate outbreak. A public health investigation and response revealed epidemiologic links that extended from the index patient through secondary, tertiary, and quaternary patients and culminated in a measles-mumps-rubella (MMR) booster vaccination campaign in the local community where approximately half of the patients resided. PMID: 32497030 [PubMed - as...
Source: MMWR Morb Mortal Wkl... - Category: Epidemiology Authors: Tags: MMWR Morb Mortal Wkly Rep Source Type: research
Here’s betting you wouldn’t want anyone blowing smallpox scabs up your nose. But you might feel differently if you lived in 15th century China. Long ago, the Chinese recognized that people who had contracted smallpox once were immune to reinfection. They came up with the idea of preserving scabs from individuals who had suffered mild cases, drying them out, crushing them to a powder and blowing them up the nostril. For boys it was the right nostril, for girls it was the left because, well, 15th century. That is how the story of vaccines usually begins, though that version is decidedly incomplete. For one thing,...
Source: TIME: Science - Category: Science Authors: Tags: Uncategorized COVID-19 Explainer health Source Type: news
GPs worried thousands may delay routine appointments due to fear of catching coronavirusCoronavirus – latest updatesSee all our coronavirus coverageSenior doctors fear that thousands of routine vaccination appointments may be missed or delayed because of the coronavirus lockdown, raising the risk of sudden and potentially fatal outbreaks of other diseases when restrictions on movement are finally eased.GPs and accident and emergency departments have witnessedunprecedented falls in the numbers of people seeking medical care in recent weeks, prompting concerns that vital routine immunisations for infections such as mea...
Source: Guardian Unlimited Science - Category: Science Authors: Tags: Vaccines and immunisation Health Coronavirus outbreak Infectious diseases Society Science Medical research Source Type: news
The Measles virus (MeV) and Mumps virus (MuV) are highly contagious paramyxoviruses that can be transmitted by respiratory droplets from or on direct contact with an infected person. The resulting diseases can lead to serious complications or death among children. The existing vaccines for MeV and MuV are live attenuated virus vaccines which are administered in two subcutaneous doses at 1 year of age and as early as one month later. Two doses of a combination measles, mumps and rubella vaccine are 97% effective against measles and 88% against mumps. A single dose of a combination measles, mumps, and rubella vaccine is 93% ...
Source: NIH OTT Licensing Opportunities - Category: Research Authors: Source Type: research
Abstract Despite high coverage with measles, mumps, and rubella vaccine in the United States, outbreaks of mumps occur in close contact settings such as schools, colleges, and camps. Starting in late 2015, outbreaks were reported from several universities, and by the end of 2017, greater than 13,800 cases had been reported nation-wide. In 2013, the CDC and the Association of Public Health Laboratories contracted four Vaccine Preventable Diseases Reference Centers (VPD-RCs) to perform real-time reverse transcription PCR (RT-qPCR) to detect mumps RNA in clinical samples and to determine the genotype. Twelve genotype...
Source: Virus Research - Category: Virology Authors: Tags: Virus Res Source Type: research
Abstract SUMMARYMumps is an acute viral infection characterized by inflammation of the parotid and other salivary glands. Persons with mumps are infectious from 2 days before through 5 days after parotitis onset, and transmission is through respiratory droplets. Despite the success of mumps vaccination programs in the United States and parts of Europe, a recent increase in outbreaks of mumps virus infections among fully vaccinated populations has been reported. Although the effectiveness of the mumps virus component of the measles-mumps-rubella (MMR) vaccine is suboptimal, a range of contributing factors has led t...
Source: Clinical Microbiology Reviews - Category: Microbiology Authors: Tags: Clin Microbiol Rev Source Type: research
Conclusions: Our study revealed heterogeneity across HDs' mumps outbreak responses but also identified common challenges that will inform future Centers for Disease Control and Prevention guidance. These results were considered in the October 2017 Advisory Committee on Immunization Practices recommendation for use of a third dose of MMR vaccine for persons at increased risk for mumps during an outbreak and in the development of Centers for Disease Control and Prevention guidance for HDs when applying the Advisory Committee on Immunization Practices recommendation.
Source: Journal of Public Health Management and Practice - Category: Health Management Tags: Research Reports: Practice Full Report Source Type: research
Conclusion: This guidance provides a framework for public health authorities to use when considering a third dose of MMR in response to mumps outbreaks while maintaining flexibility to incorporate local factors related to individual outbreaks.
Source: Journal of Public Health Management and Practice - Category: Health Management Tags: Research Reports: Practice Full Report Source Type: research
More News: Allergy & Immunology | Epidemiology | Infectious Diseases | International Medicine & Public Health | Laboratory Medicine | Measles | Measles Vaccine | Mumps | Mumps Vaccine | Outbreaks | Rubella | Rubella Vaccine | Vaccines