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Published on: February 9, 2011
A large outbreak of streptococcal pyoderma in a military training establishment
Abstract:
An outbreak of streptococcal pyoderma in a military institution into which fresh susceptible recruits were regularly introduced involved more than 1300 persons over an eighteen-month period. Two M types were responsible for the great majority of the cases and an attack by one conferred immunity to that strain but not to the other. Lesions varied from trivial to disabling. Epidemiological studies indicated that contact -- direct or indirect -- through such things as gymnasium equipment and room dust was the means of transmission. The outbreak was eventually controlled by vigorous case finding, thorough treatment of cases and the strict application of hygienic principles to prevent spread. There were no late complications and throat streptococci were not involved. It is possible to control such an outbreak without isolation or the making of any significant concessions in the training programme even when large numbers of persons are living and working at close quarters.
Insights
A large streptococcal pyoderma outbreak in military recruits was controlled using hygiene and treatment, not isolation. This demonstrates effective management of skin infections in close-living populations.
Area of Science:
- Dermatology
- Infectious Diseases
- Epidemiology
Background:
- Streptococcal pyoderma outbreaks can affect large populations, particularly in settings with high population density and regular influx of susceptible individuals, such as military institutions.
- Understanding the transmission dynamics and M types of Streptococcus pyogenes is crucial for effective outbreak control.
Purpose of the Study:
- To describe the epidemiology and control of a prolonged outbreak of streptococcal pyoderma in a military institution.
- To identify the responsible M types and transmission routes of the pathogen.
Main Methods:
- Epidemiological investigation of over 1300 cases over 18 months.
- Identification of Streptococcus pyogenes M types involved in the outbreak.
- Assessment of transmission routes, including direct and indirect contact.
Main Results:
- Two M types of Streptococcus pyogenes caused the majority of cases, with strain-specific immunity observed.
- Transmission occurred through direct and indirect contact, facilitated by close living quarters.
- The outbreak was successfully controlled through prompt case detection, treatment, and strict hygiene protocols.
Conclusions:
- Streptococcal pyoderma outbreaks in military settings can be managed effectively without isolation or compromising training programs.
- Vigorous case management and adherence to hygienic principles are key to controlling skin infection spread in communal living environments.
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