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. 2019 Mar 15;19:258. doi: 10.1186/s12879-019-3877-7

Fig. 2.

Fig. 2

Endemic Index. An index amongst the VREfm-related infections and number of discharged patients per month, in at least 24 months. Zero (0) in months corresponds to January 2014, and 30 to June 2016. If this index is above the third standard deviation (SD), an outbreak is confirmed, according to the Bogotá District Health Secretariat [29]