Table 3.

The maximum reduction in resistant bacteria within human populations when accounting for the effects of usage and transmission parameters. The maximum reduction can be achieved by totally stopping human antibacterial use and human-human transmission, but animal and environmental factors can still contribute significantly to reducing the burden of ABR within humans.

Parameter	Median reduction in colonisation with resistant bacteria in humans (95% credible interval) 2020–2040
Human ABU	95.4 (65.7–99.7)
Human-to-human transmission	17.1 (8.2–36.3)
Animal ABU	7.1 (1.0–16.8)
Animal-to-human transmission	7.9 (1.1–17.1)
Environment contamination by AB	0.1 (0.0–1.8)
Environment-to-human transmission	0.1 (0.0–1.4)