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Monthly counts of isolates of several specific organisms per 1000 OBD (monthly incidence rates) during the 4-year study period*
OBD = occupied bed-days. * The dashed vertical line denotes the move from the old ICU location to the newly constructed expanded ICU on 5 May 2016. A simplifying assumption of independence of these time series data was used to derive the 95% confidence bands displayed for each linear regression in these graphs. † Excluding surveillance.
