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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

Parainfluenza
Condition	Isolation	Duration of Isolation	Comment
	Contact Droplet	Adult and Pediatric hematology/oncology/BMT patients: Duration of illness AND retest is negative. All other patients: Duration of illness	Initiate isolation when test is ordered to rule out viral pathogens.

Parechovirus
Condition	Isolation	Duration of Isolation	Comment
	Contact Standard Droplet	Duration of illness	Additional resources are available on the parechovirus web page.

Parvovirus B19 (Erythema infectiosum)
Condition	Isolation	Duration of Isolation	Comment
Immunosuppressed patient	Standard Droplet	For duration of hospitalization when chronic disease occurs	Duration of precautions for immunosuppressed patients with persistently positive PCR not defined, but transmission has occurred.
Patient with transient aplastic or red-cell crisis	Standard Droplet	Seven days from symptom onset if known. Use date of identification if symptom onset date unclear.

Pediculosis (see lice)
Condition	Isolation	Duration of Isolation	Comment

Pertussis (whooping cough)
Condition	Isolation	Duration of Isolation	Comment
	Standard Droplet	Until 5 days of effective antibiotic therapy

Pinworm infection
Condition	Isolation	Duration of Isolation	Comment
	Standard

Plague (Yersinia pestis)
Condition	Isolation	Duration of Isolation	Comment
bubonic	Standard
pneumonic	Standard Droplet	Until 48 hrs after initiation of effective therapy

Pneumonia due to
Condition	Isolation	Duration of Isolation	Comment
Pneumonia, adenovirus			Refer to Adenovirus-Respiratory Infection
Bacterial, not listed elsewhere	Standard
Burkholderia cepacia in cystic fibrosis patients, including respiratory tract colonization	UCSF Isolation
Burkholderia cepacia in patients without cystic fibrosis	Standard
Chlamydia	Standard
Fungal	Standard
H. influenzae, Infants and children (any age)	Standard Droplet	Until 24 hours after initiation of effective theraphy
H. influenzae, All other patients	Standard	Until 24 hours after initiation of effective theraphy
Legionella	Standard
Meningococcal (N.meningitidis)	Standard Droplet	Until 24 hours after initiation of effective therapy
Multidrug-resistant bacterial (see Multidrug-Resistant Organisms)
Mycoplasma (primary atypical pneumonia)	Standard Droplet	Duration of illness
Pneumococcal (Streptococcus pneumoniae)	Standard
Pneumocystis carinii	Standard
Staphylococcus aureus (nafcillin/methicillin sensitive OR resistant)	Standard
Streptococcus pyogenes (group A strep)	Standard Droplet	Until 24 hours after initiation of effective therapy