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.

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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