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Measles in immunized medical residents: Case series with brief review
Priya Bansal1, Anshuman Srivastava2, Ramesh Aggarwal1
1Department of Medicine, Lady Hardinge Medical College and SSK Hospital, New Delhi, India.
Abstract:
Measles is a vaccine-preventable disease that continues to be a major cause of morbidity and mortality in children and young adults across the world. Immunization efforts have reduced the incidence of measles over the last 3 decades, but outbreaks are seen in high-transmission areas with susceptible populations, as is seen in hospitals and student campuses. The protection offered by prior vaccination may wean off over time making vaccinated individuals susceptible to infection. Hence, catch-up immunization drives should be undertaken for vulnerable populations such as healthcare personnel, along with routine immunization programs, with the goal to eliminate measles in the future. This case series presents measles in two of our medical residents who got infected despite being vaccinated in childhood.
Insights
Measles outbreaks occur even in vaccinated populations due to waning immunity. Catch-up vaccination for healthcare workers is crucial for measles elimination.
Area of Science:
- Public Health
- Infectious Diseases
- Vaccinology
Background:
- Measles remains a significant global health threat, causing substantial morbidity and mortality in children and young adults.
- While vaccination has decreased incidence, outbreaks persist in areas with susceptible populations, including healthcare settings and educational institutions.
- Immunity from childhood vaccination can diminish over time, potentially rendering individuals susceptible to measles infection.
Observation:
- This case series details two instances of measles infection in medical residents.
- Both infected residents had received measles vaccination during childhood.
- These cases highlight the possibility of measles breakthrough infections in vaccinated individuals.
Findings:
- The study identifies waning immunity as a potential factor in measles susceptibility among previously vaccinated individuals.
- It underscores the risk of measles transmission within healthcare environments, even with high vaccination rates.
- The cases demonstrate that childhood vaccination alone may not provide lifelong protection against measles.
Implications:
- Catch-up immunization drives are recommended for vulnerable groups, particularly healthcare personnel, to bolster population immunity.
- Routine immunization programs should be reinforced to achieve future measles elimination goals.
- Further research into the duration of vaccine-induced immunity and strategies for maintaining protection is warranted.
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