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The prevalence and influencing factors of methicillin-resistant Staphylococcus aureus carriage in people in contact with livestock: A systematic review

Liu, W and Liu, Z and Yao, Z and Fan, Y and Ye, X and Chen, S

American Journal of Infection Control (2015) 43: 469–75

DOI: 10.1016/j.ajic.2014.12.009

Abstract

BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is becoming a serious epidemic worldwide. Recently, studies have shown that people in contact with livestock may have a greater chance of MRSA carriage. We aimed to establish the prevalence of MRSA among people in contact with livestock and review the factors influencing MRSA carriage. METHODS: We systematically examined published epidemiologic studies on MRSA prevalence in people in contact with livestock using Pubmed, Medline, Embase, Ovid, and the Cochrane Library. Prevalence estimates were pooled using a random-effects model. Study heterogeneity was assessed using Q statistics and quantified with I2 statistics. RESULTS: Thirty-three eligible studies were included in this systematic review. Prevalence of MRSA ranged from 0.0%-85.8%. The pooled prevalence estimate of MRSA was 14.2% (95% confidence interval, 9.1%-20.1%) for people in contact with livestock. Substantial heterogeneity in eligible studies was noted (chi2 = 1,025; P \textless .001; I2 = 96.9%). Subgroup analysis showed the prevalence of MRSA was high in people from Europe (15.9%), farmers (18.2%), and by longitudinal study design (38.9%). Animal contact and intensity of animal contact were associated with increased risk of MRSA carriage. CONCLUSION: Our findings suggest that there may be transmission of MRSA between animals and humans.

Citation

Liu, W., Liu, Z., Yao, Z., Fan, Y., Ye, X., & Chen, S. (2015). The prevalence and influencing factors of methicillin-resistant Staphylococcus aureus carriage in people in contact with livestock: A systematic review. American Journal of Infection Control, 43(5), 469–475. https://doi.org/10.1016/j.ajic.2014.12.009 Animals, Livestock, Veterinary surgeons

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