A measles outbreak among young adults in Victoria, February 2001

Natasha Davidson1, Ross Andrews, Michaela Riddell

  • 1Victorian Public Health Training Scheme, Department of Human Services, Melbourne, Australia. natasha.davidson@mh.org.au

Insights

Young adults in Victoria are at high risk for measles outbreaks, with many cases linked to a specific birth cohort. Targeted vaccination strategies are needed for this group and healthcare workers.

Area of Science:

  • Epidemiology
  • Public Health
  • Infectious Diseases

Background:

  • Measles outbreaks continue to pose a significant public health risk, particularly among specific demographics.
  • Young adults born between 1968 and 1981 have been identified as a vulnerable population in Victoria due to previous outbreaks.

Purpose of the Study:

  • To investigate a measles outbreak in Melbourne linked to a traveler returning from India.
  • To identify the demographic groups most affected and assess vaccination status.
  • To inform public health strategies for measles prevention.

Main Methods:

  • Case investigation following a measles-infected traveler's visit to Melbourne.
  • Analysis of case demographics, focusing on birth cohort and vaccination history.
  • Review of healthcare utilization among infected individuals.

Main Results:

  • A total of 50 measles cases were identified, primarily among young adults.
  • Seventy-five percent of cases (38 individuals) belonged to the 1968-1981 birth cohort.
  • Forty-three percent of cases (22 individuals) required hospitalization, often after multiple healthcare visits. No cases had documented adequate measles-containing vaccine doses.

Conclusions:

  • Young adults, especially those born between 1968 and 1981, represent a high-risk group for measles infection in Victoria.
  • Inadequate measles vaccination coverage within this cohort contributes to recurrent outbreaks.
  • Enhanced, targeted vaccination strategies for young adults and healthcare professionals are crucial for effective measles control.

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