| In the
information provided below please note, the turn-around-time for each type of
virus listed is an estimate of the minimum time that cultures will be
examined before being reported out as negative. Delays in reporting may occur
if a specimen being tested is toxic to one or more of the cell lines being
used resulting in the need to "pass" current cultures into new ones.
Adenovirus
- Throat/nasopharyngeal
- Conjunctival swab or scraping (for eye syndrome)
- CSF
- Urine (virus may be present if there is renal
involvement)
- Rectal swabs or stool
- Turn-around time: 14 days
- Isolates identified by fluorescent antibody staining and
typed by neutralization.
Arbovirus
- Because arboviruses are usually no longer being shed by
patients once they are ill enough to seek medical treatment, isolation
attempts for arboviruses are rarely successful. Submitters desiring
arbovirus isolation should contact the Virology laboratory. Since
serologic testing is appropriate for the detection of arbovirus
infections, acute and convalescent sera should also be submitted.
Coxsackie
A Viruses
- Stool
- Throat/nasopharyngeal
- CSF
- Turn-around time: 14 days
- Isolate identification by neutralization
Coxsackie
B Viruses
- Stool
- Throat/nasopharyngeal
- CSF
- Pericardial fluid (myocarditis, pericarditis, pleurodynia)
- Turn-around time: 14 days
- Isolate identification by neutralization
Cytomegalovirus
(CMV)
- Urine
- Throat/nasopharyngeal
- Bronch washes/biopsy (especially AIDS patients)
- Blood
- Turn-around time: 30 days
- Isolate identification by fluorescent antibody staining
- Note: Urine and respiratory specimens tested for CMV are
routinely set up in shell vials. Shell vials are "blind" stained
at 48 and 96 hours for the presence of CMV.
Echo
Viruses
- Stool
- Throat/nasopharyngeal
- CSF
- Turn-around time: 14 days
- Isolate identification by neutralization
Enteroviruses
(Coxsackie A, Coxsackie B, ECHO, and Polio viruses)
- Stool
- Throat/nasopharyngeal
- CSF
- Pericardial fluid (coxsackie b only)
- Turn-around time: 14 days
- Isolate identification by neutralization
Herpes
Simplex Viruses (HSV)
- Vesicle scrapings/fluid
- Throat/nasopharyngeal
- Brain biopsy (meningoencephalitis)
- Turn-around time: 7 days
- Isolate identification by fluorescent antibody staining
- The Virology Section does not subtype herpes-virus
isolates.
Influenza
Viruses
- Throat/nasopharyngeal (Note: Do not freeze)
- Turn-around time: 14 days
- Isolate identification by fluorescent antibody staining
- Typing done by Hemagglutination Inhibition (HI)
Measles
Virus
- Throat/nasopharyngeal
- Urine
- Whole blood (buffy coat preferable to serum)
- Turn-around time: 14 days
- Isolate identification by fluorescent antibody staining
and/or complement fixation
Mumps
Virus
- Throat/nasopharyngeal
- Sputum
- Urine
- CSF
- Turn-around time: 14 days
- Isolate identification by fluorescent antibody staining
and/or complement fixation
Parainfluenza
Viruses
- Throat/nasopharyngeal
- Sputum
- Turn-around time: 14 days
- Isolate identification by fluorescent antibody staining
Polio
Viruses
- Stool
- Throat/nasopharyngeal
- CSF
- Turn-around time: 14 days
- Isolate identification by neutralization
- The Virology Section should be promptly notified if the
patient's diagnosis includes the possibility of polio.
Respiratory
Syncytial Virus (RSV)
- Throat/nasopharyngeal
- Turn-around time: 14 days
- Isolate identification by fluorescent antibody staining
Rhinoviruses
- Throat/nasopharyngeal
- Turn-around time: 14 days
- Isolate identification by acid lability testing and
fluorescent antibody staining
Rubella
Virus
- The Virology laboratory does not routinely perform virus
isolation testing for the rubella virus. Contact the Virology Section if
rubella is suspected. Blood specimens for serologic testing should be
drawn.
Varicella
Zoster Virus
- Vesicle fluid
- Turn-around time: 14 days
- Isolate identification by fluorescent antibody staining
Limitations
Failure to isolate any
specific virus does not rule out the viral agent as a cause of infection or
disease.
References
Bailey and Scott's
Diagnostic Microbiology; 8th edition; Baron and Finegold editors;
publisher; the C.V. Mosby company, St. Louis
Diagnostic Procedures for Viral, Rickettsial, and Chlamydial Infections,
6th edition; Schmidt and Emmons editors, American Public Health Association (APHA)
publisher
written by Ronald C. Cheshier; 03/26/96 |