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Laboratory Influenza Response
Kerri GerageLaboratory Emergency Response CoordinatorLouisiana Office of Public Health Laboratory
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Disclosure
• I have no financial interests or other relationship with manufacturers of commercial products, suppliers of commercial services, or commercial supporters. My presentation will not include any discussion of the unlabeled use of a product or a product under investigational use.
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Objectives
• Describe the Office of Public Health Laboratory’s mission for Influenza Testing
• Recognize the OPH Lab capabilities and capacity
• Discuss acceptable sample types and proper shipping methods
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Public Health MissionPandemic Influenza Testing
• NOT Diagnostic Testing • Determine when and where influenza viruses are circulating• Determine how much influenza activity is occurring• Identify types and strains of circulating influenza viruses in
addition to the pandemic strain• Monitor for mutations in the influenza virus strains• Detect unusual events:
– Infection by unusual viruses– Unusual syndromes caused by influenza viruses– Unusual large/severe outbreaks of influenza– Increased mortality
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Challenges NOT encountered THIS TIME
• Limitations or absence of lab reagents, supplies, PPE, etc
• Worker absenteeism (ie. personal illness, family issues, quarantine)
• Disruptions of medical and community services
• Need to suspend other critical lab services
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Current Role in Influenza Testing
• Tests human specimens for influenza virus year-round according to OPH guidelines:– Seasonal influenza surveillance (Sentinel providers) – Investigation of respiratory illness outbreaks (ID Epi)– Surveillance for novel influenza virus in humans• If case meets OPH and CDC clinical and epidemiologic
criteria for possible novel influenza infection
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OPH Laboratory Capabilities
• Infrastructure available from ongoing preparedness efforts and planning– Dedicated molecular laboratories• Multiple real time PCR instruments and platforms
– Experienced molecular and virology staff– 24 hours a day, 7 days a week emergency response
capability– Influenza collection kits on hand
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Overview of OPH Laboratory Testing
• FDA cleared – Emergency Use Authorization, CDC developed test for Influenza A, B, and for sub-typing H1, swH1, H3 (and if needed H5)
• All tests will be performed by real-time rt-PCR• First five confirmed positive Influenza A swH1
specimens are referred to CDC for drug resistance testing each week
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What has OPH Done to be Ready for Future Influenza Pandemics?
• We have cross-trained additional staff• Added some additional equipment• Will have additional clerical staff trained for
data entry• Rearranged the Laboratory to allow for more
efficient work-flow
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Additional Biological Safety Cabinets for Specimen Processing
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Additional Automated Nucleic Acid Extraction Equipment
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Additional Real Time PCR Equipment
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How Was Testing Handled Differently in the OPH Laboratory in the Spring ‘09 and now?
• In the Spring - wide spread testing to characterize a new virus and its spread– A large number of isolates were tested– A large number of isolates were sent to CDC
• Currently - limited targeted testing as needed– Representative isolates will be sent to CDC
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How is Testing be Handled Differently in Clinical Laboratories
• FDA (Emergency Use Authorization) has cleared the first commercially available Influenza A swH1 assay for clinical use; others will follow
• Some Commercial Laboratories currently have non-FDA approved, CLIA compliant Influenza A swH1 kits
• Diagnostic test manufacturers are ramping up production of rapid test kits
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Specimen Submissions
• Specimens will only be accepted from:
– Influenza Sentinel Submitters selected by the Infectious Diseases Epidemiology Program
– From hospitalized patients that meet the criteria set by ID Epidemiology
– No general population or clinical testing
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Current Acceptable sample types
• Nasopharyngeal swab: Tip of a polyester or Dacron swab placed in a transport vial containing 2.0ml of viral transport medium
• Throat washing: 3-5 ml of sterile PBS gargled and placed in a transport vial containing 2.0 ml of viral transport medium
• Throat swab: Tip of a polyester or Dacron swab placed in a transport vial containing 2.0 ml of viral transport medium
• Nasal washing: 3-7 ml of sterile PBS used to wash the patient’s nasal passage put into a sterile transport vial with viral transport medium
• Nasal swab: Tip of a polyester or Dacron swab placed in a vial containing 2.0 ml of viral transport medium
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Sample Collection
• Samples must be collected using a Dacron, polyester, or rayon swab with a plastic or aluminum shaft
• Specimens must arrive in sealable bag placed inside of an insulated cooler
• Patient sample collection swabs must be placed in collection tubes with Viral Transport Media. Transport media must be specifically for viral transport. Media used to transport specimens for bacterial, fungal or parasite examinations are not acceptable
• When collecting samples from a patient suspected of having H1N1, a new swab should be collected to send to the OPH Lab. Do not send the same swab that was used for the Rapid Test
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How to submit a Specimen• Place the swab in Viral Transport Media• Make sure Viral Transport Media Has Not
Expired
• Put the date and time of collection on the tube along with the patient’s name
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Fill out the Submission Form Completely
• Incomplete forms delay testing• Common Errors– No Fax Number– No time or date of collection – Illegible
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Packaging Flu Samples
• Obtain a Category B mailer• Place frozen ice packs on the bottom of the Styrofoam ice
chest• Place wet ice in a sealable bag on top of the froze ice
packs• Place the sample in viral transport media in another
sealable bag with absorbent material on top of the wet ice• Fill another sealable bag with wet ice to put on top of the
samples• Place 2 more frozen ice packs on top of the wet ice
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Ship to the OPH Laboratory Overnight in a Category B Mailer
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Why all these details?
• Proper specimen collection, packaging and shipping ensure a quality specimen is analyzed
• Federal Regulators require that these procedures be followed.– Non-compliance can result in fines and closure of
the laboratories responsible
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Who will get the Laboratory Results
• The following people all get the patient test results at the same time-as soon as they are verified– Infectious Disease Epidemiology– Person or Agency that Submitted the Specimen• by Fax if the number is provided • by mail if fax number is not provided
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What Restrictions are there on Releasing Laboratory Results?
•HIPPA regulations require that patients health data be protected from disclosure
– Patients have to authorize the release of their lab results to third parties– The OPH Laboratory will only release lab results to the submitter of record on the submission form without the patients permission– The only exception is for public health use
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Upcoming Changes to Influenza Testing
• FDA Emergency Use Authorization will expire soon
• Acceptable sample sources for testing may change
• Temperature requirements will expand from 2- 4° C to 2- 8° C
• The acceptable time frame for getting refrigerated samples to the lab will decrease from 96 hrs to 72 hrs
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Upcoming Changes to Influenza Testing
• Letter will be faxed to all submitters explaining the changes
• Report terminology may change slightly
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Additional Lab Space
• Installed a Modular BSL 3• Adds additional lab space• Adds additional testing capablilities
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Modular BSL 3
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Modular BSL 3
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Modular BSL 3
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Modular BSL 3
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Modular BSL 3
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Modular BSL 3
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Modular BSL 3