Bacteriophage Ecology Group

Bacteriophage Ecology Group Bacteriophage Ecology Group

Multiplicity of Infection (MOI)

 

The ratio of adsorbed or infecting phages to total adsorbable or infectable bacteria.

Multiplicity of infection, however, is often mistakenly used to describe the ratio of added phages to total bacteria.

The adsorbed ratio is also described as MOIactual whereas the added ratio can be referred to as MOIinput.

This is the definition from Adams (1959), p. 441, "Ratio of adsorbed phage particles to bacteria in a culture."

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