Figure 1From: Genetic basis of rifampicin resistance in methicillin-resistant Staphylococcus aureus suggests clonal expansion in hospitals in Cape Town, South AfricaAnnual percentage of rifampicin-resistant MRSA isolates collected between July 2007 and June 2011. Figures shown below the graph indicate the total number of MRSA isolates obtained each year, or part thereof. No significant difference was detected in the prevalence of rifampicin resistance among MRSA isolates over the four year period (p = 0.0521).Back to article page