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Epidemiologic features of mumps in Taiwan from 2006 to 2011: a new challenge for public health policy
Chian-Ching Chen1, Chien-Chih Lu, Bo-Hua Su
1Department of Business Administration, National Taiwan University of Science and Technology, Taipei, China.
Background:
The adoption of a second dose of the measles-mumps-rubella (MMR) vaccine among Taiwanese school children began in 2001. However, during that time, mumps cases continued to occur. The purpose of the present study was to assess the epidemiology and vaccination policy for mumps in Taiwan.
Methods:
We examined the data on mumps cases collected by the Taiwan Centers for Disease Control (Taiwan CDC) between 2006 and 2011.
Results:
During the 6-year study period, a total of 6612 cases of mumps were reported to the Taiwan CDC. Of the patients with known vaccination status, 62% received one dose of the MMR vaccine or no vaccine. The incidence of mumps ranged from 4.18 to 5.28 per 100 000 population and peaked in 2007. Males had a higher incidence of mumps than females (5.9 vs. 3.7 per 100 000 population; P=0.024). Children between 5 and 6 years of age had the highest incidence of mumps, and those 20 years and older had the lowest incidence. Compared to those who received two doses of the MMR vaccine, patients who were not vaccinated or received a single dose of the vaccine had a higher risk of suffering from complications and/or hospitalization.
Conclusions:
In Taiwan, more than 60% of mumps cases received either no dose or one dose of the MMR vaccine. Monitoring mumps through biological testing and instituting a second dose of the MMR vaccine for children is needed for the elimination of mumps in Taiwan.
Insights
Most mumps cases in Taiwan involved individuals with no or one dose of the measles-mumps-rubella (MMR) vaccine. Implementing a second MMR vaccine dose is crucial for mumps elimination.
Area of Science:
- Epidemiology
- Vaccinology
Background:
- Measles-mumps-rubella (MMR) vaccine's second dose adoption in Taiwan began in 2001.
- Mumps cases persisted despite the introduction of the second MMR vaccine dose.
Purpose of the Study:
- To assess the epidemiology of mumps in Taiwan.
- To evaluate the effectiveness of the current mumps vaccination policy.
Main Methods:
- Analysis of mumps case data from the Taiwan Centers for Disease Control (Taiwan CDC) from 2006 to 2011.
- Examination of vaccination status, incidence rates, and demographic factors.
Main Results:
- 6612 mumps cases reported between 2006-2011.
- 62% of cases had received one or no MMR vaccine dose.
- Higher incidence in males and children aged 5-6 years; increased risk of complications with fewer than two doses.
Conclusions:
- Over 60% of mumps cases in Taiwan were unvaccinated or received only one MMR dose.
- Biological monitoring and a second MMR vaccine dose are necessary for mumps elimination.
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