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. 2007 Feb;135(2):321-7.
doi: 10.1017/S0950268806006819.

Group A streptococcal skin infection outbreak in an abattoir: lessons for prevention

C P Humphreys  1 , S J Morgan, M Walapu, G A J Harrison, A P Keen, A Efstratiou, S E Neal, R L Salmon
Affiliations

Group A streptococcal skin infection outbreak in an abattoir: lessons for prevention

C P Humphreys et al. Epidemiol Infect. 2007 Feb.

Abstract

During a group A streptococcus (GAS) outbreak 21 abattoir workers developed skin infections. The unusual outbreak strain (emm 108.1) was cultured from five workers and four persons in the community with links to the abattoir. The attack rate was 26% in the lamb line. Communal nailbrushes were neither routinely disinfected nor changed, and had high bacterial counts. A cohort study found a higher risk from working in the gutting area and getting cuts on hands more than weekly. Despite high bacterial counts daily nailbrush use had a lower risk, as did always wearing disposable gloves. Working in the gutting area (OR 11.44) and nailbrush use at least once a day (OR 0.04) were significant in the multivariate model. Transmission of infection is likely to have occurred on carcasses. GAS infection among abattoir workers was once common. Simple hygiene measures, such as nailbrush use, may reduce the impact of future outbreaks.

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Figures

Fig. 1
Fig. 1
Attack rates in different areas of the abattoir. Overall: 331 staff; attack rate (AR) 6·3%. formula image, Carcass transport.
Fig. 2
Fig. 2
Onset dates for clinical cases and microbiologically confirmed cases of GAS.
Fig. 3
Fig. 3
Schematic diagram of lamb line showing relative risks associated with undertaking different activities (excludes supervisors and cleaners who may undertake activity on any part). Arrows indicate direction of travel of carcass.
See this image and copyright information in PMC

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MeSH terms