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Table 3. Distribution of the studies describing colistin resistance in West Africa.

Country Year Source Organism Number of isolates exhibiting colistin resistance Mechanism Plasmid Genes detected Number of isolates positives for mcr genes ST References
Nigeria 2019 Human Escherichia coli 21 Plasmid ND mcr-1 2 ND 58
Nigeria 2018 Multiple sources Escherichia coli 5 Plasmid ND mcr-1 5 ND 59

ND - not determined; ST - sequence type.