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Isolation Table

A B C D E F G H I K L M N O P Q R S T U V W Y Z

Abscess, draining
Condition	Isolation	Duration of Isolation	Comment
Major	Contact Standard	Duration of illness (i.e., until drainage stops or can be contained by a dressing)	“Major” defined as “Dressing does not contain drainage adequately”
Minor or limited	Standard		Standard precautions needed if dressings cover and contain drainage. Note: standard precautions includes the use of gloves when touching blood, body fluids, and non-intact skin.

Acinetobacter baumannii
Condition	Isolation	Duration of Isolation	Comment
Multi-drug resistant (defined as carbapenemase-producing)	Contact Standard		See Multidrug resistant organisns ( MDRO) for further definitions
Non-carbapenemase-producing	Standard		See Multidrug resistant organisns ( MDRO) for further definitions

Acquired immunodeficiency syndrome (AIDS), Human Immunodeficiency Virus (HIV)
Condition	Isolation	Duration of Isolation	Comment
	Standard		Postexposure chemoprophylaxis for some blood exposures. See Bloodborne Pathogens Exposure Plan (https://ucsf.app.box.com/s/teqpxzwqao266snuo8dxc3o871tr867c) for more details.

Actinomycosis (Actinomyces sp.)
Condition	Isolation	Duration of Isolation	Comment
	Standard

Acute Flaccid Myelitis/Paralysis
Condition	Isolation	Duration of Isolation	Comment
	Contact Standard Droplet	Duration of illness	If Acute Flaccid Myelitis (AFM) is suspected, contact San Francisco DPH 415-554-2830

Adenovirus
Condition	Isolation	Duration of Isolation	Comment
Conjunctivitis	Contact	Duration of illness
Gastroenteritis	Contact	Duration of illness
Respiratory infection	Contact Droplet	Adult and Pediatric hematology/oncology/BMT patients: Duration of illness AND retest is negative. All other patients: Duration of symptoms	If discrete or continuous aerosol generating procedure performed, post Aerosol Generating Procedure in progress sign. Wear the appropriate PPE during the procedure and if applicable, when entering the room 1 hr after the procedure. Refer to: Guidance for PPE use for High Risk Aerosol Generating Procedures'

Amebiasis
Condition	Isolation	Duration of Isolation	Comment
	Standard

Anthrax (Bacillus anthracis)
Condition	Isolation	Duration of Isolation	Comment
Cutaneous	Standard		Use Contact + Standard if large amount of uncontained drainage. Wash hands with soap and water.
Pulmonary	Standard		Use Contact + Standard if large amount of uncontained drainage. Wash hands with soap and water.

Antibiotic-associated colitis (see Clostridioides difficile)
Condition	Isolation	Duration of Isolation	Comment

Arthropod/mosquito-borne viral infections
Condition	Isolation	Duration of Isolation	Comment
(viral encephalitides [eastern, western, Venezuelan equine encephalomyelitis; St Louis, California encephalitis; West Nile Virus] and viral fevers [dengue, yellow fever, Colorado tick fever])	Standard		Not transmitted from person to person except rarely by transfusion, and for West Nile virus by organ transplant, breastmilk or transplacentally. No HCW restriction; treat as any other bloodborne pathogen (face and eye protection, gloves, gown if splash is anticipated)

Ascariasis (Ascaris sp.)
Condition	Isolation	Duration of Isolation	Comment
	Standard

Aspergillosis (Aspergillus sp.)
Condition	Isolation	Duration of Isolation	Comment
	Standard		Airborne + Contact + Standard if massive soft tissue infection with copious drainage and repeated irrigations required

Avian influenza (see Influenza, Avian below)
Condition	Isolation	Duration of Isolation	Comment
			Additional resources are available on the Avian Influenza web page