TABLE 3.

Transmission-based precautions to prevent the spread of epidemiologically important pathogens in CF patients

Type of transmission-based precaution	Potential pathogens
Standard	Applicable to all CF patients including those infected with:
	NTM
	P. aeruginosa (not multidrug resistant)
	S. aureus (not MRSA)
Contact	Multidrug-resistant organisms
	MRSA
	B. cepacia complex
	Multidrug-resistant P. aeruginosa
	S. maltophilia
	Viruses
	RSV
	Parainfluenza virus
Droplet	Viruses
	Influenza virus
	Adenovirus
Airborne	M. tuberculosis
Protective environment	No data supporting the use of positive-pressure ventilation and >12 air exchanges for CF patients with lung transplantation; may consider in the setting of suspected transmission of Aspergillus spp. within a transplant center