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Related Experiment Video

Updated: Feb 6, 2026

Design and Construction of an Urban Runoff Research Facility

Design and Construction of an Urban Runoff Research Facility

Published on: August 8, 2014

Group A Streptococcus Outbreak in a Canadian Armed Forces Training Facility.

Karon Hammond-Collins¹, Barbara Strauss², Kirsten Barnes²

¹Canadian Field Epidemiology Program, Public Health Agency of Canada, 100 Colonnade Drive, Ottawa, ON, Canada.

Military Medicine

|August 24, 2018

Summary

A Group A Streptococcus (GAS) outbreak in Canadian military trainees highlighted transmission risks and led to improved surveillance. Enhanced control measures successfully halted further invasive GAS infections.

Keywords:

Streptococcus pyogenes Canada DNA sequence analysis Infectious disease outbreaks military personnel

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Published on: September 14, 2019

Area of Science:

Infectious Disease Epidemiology
Microbiology
Public Health

Background:

Group A Streptococcus (GAS) infections can cause severe invasive disease.
Military training facilities present unique challenges for infectious disease control due to close living quarters.

Purpose of the Study:

To investigate an outbreak of invasive GAS infections at a Canadian military training facility.
To characterize the outbreak, identify risk factors, and evaluate control measures.

Main Methods:

Field investigation including throat cultures, case tracking, and interviews.
Molecular typing using whole-genome sequencing to analyze GAS isolates.
Evaluation of a rapid antigen detection test's performance.

Main Results:

Four invasive and six non-invasive GAS cases were reported.
GAS was detected in 35.2% of throat cultures from personnel.
Low sensitivity was observed for the rapid antigen detection test (31.6%).
Phylogenetic analysis revealed highly related outbreak isolates (emm6.4).
Recruit behaviors like reluctance to seek care and poor antibiotic compliance were noted.

Conclusions:

This was the first reported GAS outbreak among Canadian military trainees.
Enhanced surveillance and control measures successfully contained the outbreak.
Recommendations included improved antibiotic compliance and medical consultation support.