CS-NPs	chitosan nanoparticles
Lys-CS-NPs	lysozyme immobilized chitosan nanoparticles
TEM	transmission electron microscopy
DLS	dynamic light scattering
MIC	minimum inhibitory concentration
P. aeruginosa	Pseudomonas aeruginosa
K. pneumoniae	Klebsiella pneumoniae
E. coli	Escherichia coli
S. aureus	Staphylococcus aureus.
LC	loading capacity
%LE	loading efficiency
DD	degree of deacetylation
ICU	intensive care unit
VAP	ventilator-associated pneumonia
QS	quorum sensing
EDAC	N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride
NHS	N-Hydroxysuccinimide
TPP	Tri-polyphosphate