Influence of wind direction on the relationship between proximity to pig farms and risk of infection with MRSA CC398 among persons without known contact to livestock: a Danish nationwide population-based study.

Conclusion While the main adjusted analysis did not show effect modification by wind direction on the relationship between proximity to pig farms and odds of clinical infection with livestock-MRSA, exploratory post-hoc analyses suggested that this may be because there is no effect modification at low distances (50 − 1,250 m), while there may be significant effect modification at intermediate distances (1,250-6,250 m).

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