Outbreak of Poliomyelitis, Republic of Congo

Date published
Case study developed by ECDC (Yvan Hutin, Aftab Jasir, Helen Maguire and Pawel Stefanoff) in collaboration with the UK FETP (Sam Bracebridge), the EPIET Alumni Network (Arnaud Le Menach) and US CDC (Christopher Gregory and Minal Patel)


This case study is designed as a stand-alone and does not come with a facilitator’s guide. The answers to all the questions for each section are provided as an introduction to the following section. To run this case study, it should be distributed one section at a time (i.e., one sheet at the time if the case study is printed out double-sided). 

Learning Objectives:

  • Define the objectives of the investigation of an outbreak of poliomyelitis
  • Define the role of laboratory methods in supporting polio outbreak investigations
  • Formulate an operational case definition during an outbreak
  • Raise hypotheses about the determinants of an outbreak of vaccine preventable disease on the basis of:
    • Descriptive epidemiological data
    • An age-cohort analysis of the level of population immunity
  • Investigate case fatality ratio during an outbreak
  • Plan control measures for an outbreak of vaccine-preventable disease
Author type
FETP affiliate
Resource type
Case Study
Country or Area
Congo, The Democratic Republic of the