Back to Inhibition of Multi Drug-Resistant (MDR) Escherichia coli and Klebsiella pneumoniae by bacteriocin bifidobacteria and the viability of selected bifidobacteria encapsulated with tapioca Inhibition of Multi Drug-Resistant (MDR) Escherichia coli and Klebsiella pneumoniae by bacteriocin bifidobacteria and the viability of selected bifidobacteria encapsulated with tapioca