Cross-species transmission risk of livestock-associated MRSA: A systematic review and Bayesian meta-analysis of global data

Dong, Q. and Liu, Y. and Li, W. and Liu, Y. and Ye, X.

Prev Vet Med (2021) 194: 105429

DOI: 10.1016/j.prevetmed.2021.105429

Abstract

Although increasing studies have indicated a strong relationship between livestock exposure and methicillin-resistant Staphylococcus aureus (MRSA) carriage in humans, the risk magnitude of cross-species transmission of livestock-associated MRSA (LA-MRSA) is still unclear. This meta-analysis aimed to evaluate the potential effect of livestock exposure on LA-MRSA (including CC398/CC9, scn-negative, and tetracycline-resistant isolates) transmission. The summary estimates were pooled by random-effects models using the DerSimonian & Laird (DL) method and the Bayesian method. Twenty-two studies were included in this meta-analysis. Livestock-exposed people demonstrated a significantly higher rate of livestock-associated S. aureus (LA-SA) carriage than non-exposed people (Bayesian estimates: OR = 5.23 for CC398/CC9; OR = 2.35 for scn-negative isolates; OR = 3.86 for tetracycline-resistant isolates). Similarly, there was a greater positive association between livestock exposure and LA-MRSA carriage in humans ((Bayesian estimates: OR = 7.64 for CC398/CC9; OR = 7.54 for scn-negative isolates; OR = 9.89 for tetracycline-resistant isolates), indicating that livestock exposure increases the risk of LA-MRSA carriage in humans. These findings provide evidence for revealing the high risk of cross-species LA-MRSA transmission by livestock exposure.

Citation

Dong, Q., Liu, Y., Li, W., Liu, Y., & Ye, X. (2021). Cross-species transmission risk of livestock-associated MRSA: A systematic review and Bayesian meta-analysis of global data. Prev Vet Med, 194, 105429. https://doi.org/10.1016/j.prevetmed.2021.105429 Animals, Livestock, Staphylococcus aureus, Human, Methicillin-resistant

Keywords

• Animals
• Livestock
• Staphylococcus aureus
• Human
• Methicillin-resistant