Evaluation of Antibacterial Activity of Three Quaternary Ammonium Disinfectants on Different Germs Isolated from the Hospital Environment

Table 1

Antibacterial activity of the three disinfectants on the tested strains.

The strains tested	Inhibition zone of disinfectant (mm)
	DDN9®	Spray	Phagosurf ND®
E. coli (7)	R	R	R
K. pneumoniae	R	R	R
E. coli (9)	R		R
E. cloacae	R	R	R
P. aeruginosa	R		R
A. baumannii	R		R
S. aureus
E. coli ATCC 25922	R		R
S. aureus ATCC 29213
P. aeruginosa ATCC 27853	R		R

R: resistance; data are the mean of three replicates and are represented as .