Search Results

The JBAIDS Influenza A/H5 (Asian lineage) Detection Kit is intended for use in real-time reverse-transcriptase polymerase chain reaction (rRT-PCR) assays on the Joint Biological Agent Identification and Diagnostic System (JBAIDS) instruments for the in vitro qualitative detection of Influenza A/H5 (Asian lineage) viral RNA in patient nasopharyngeal swab (NPS) or throat swab (TS) specimens for the presumptive laboratory identification of Influenza A/H5 (Asian lineage) virus. Testing with the JBAIDS Influenza A/H5 (Asian lineage) Detection Kit should be in conjunction with other laboratory testing and clinical observations for the following indications: 1. Providing epidemiological information for the surveillance of human infection with Influenza A/H5 (Asian lineage) virus. 2. Identifying patients who may be infected with Influenza A/H5 (Asian lineage) virus based on clinical and epidemiological risk factors. Testing with the JBAIDS Influenza A/H5 (Asian lineage) Detection Kit should not be performed unless the patient meets the most current U.S. Department of Health and Human Services (DHHS) clinical and epidemiologic criteria for testing suspected A/H5 specimens. The definitive identification of influenza A/H5 (Asian lineage) either directly from patient specimens or from virus cultures requires additional laboratory testing, along with clinical and epidemiological assessment in consultation with national influenza surveillance experts. Negative results do not preclude influenza virus infection and should not be used as the sole basis for treatment or other patient management decisions. Use is limited to laboratories with appropriate biosafety equipment and containment procedures. It is intended for use by experienced laboratory personnel who have training in standardized molecular testing procedures and expertise in viral diagnosis, and have received training on the JBAIDS Instrument. If infection with a novel influenza A virus is suspected based on current clinical and epidemiological screening criteria recommended by public health authorities, specimens should be collected with appropriate infection control precautions for novel virulent influenza viruses and sent to state or local health departments for testing. Viral culture should not be attempted in these cases unless a biosafety laboratory (BSL) 3+ facility is available to receive and culture specimens.

The Joint Biological Agent Identification and Diagnostic System (JBAIDS) Influenza A/H5 (Asian lineage) Detection Kit is a real-time reverse transcriptase polymerase chain reaction (rRT-PCR) test kit, which, when used with the JBAIDS instrument and software, allows the qualitative in vitro detection of Influenza A/H5 (Asian lineage) viral RNA. The kit contains two freeze-dried assays with primer and fluorescent-probe sets for the detection of Influenza A/H5 (Asian lineage) viral RNA. In particular, the two assays specifically target distinct regions of the influenza A hemagglutinin gene of the highly pathogenic H5N1 viruses from the Asian lineage, without detection of other influenza A virus subtypes, including the North American lineage influenza A/H5 viruses. The tests are performed using the previously FDA-cleared JBAIDS instrument and software. A human gene target assay will be used as an inhibition and extraction control.

The Human Influenza Virus Real-time RT-PCR Detection and Characterization Panel (rRT-PCR Flu Panel) is intended for use in Real-time RT-PCR assays on an AB1 7500 Fast Dx Real-time PCR instrument in conjunction with clinical and epidemiological information: - for qualitative detection of influenza virus type A or B in symptomatic patients from viral RNA in nasopharyngeal and/or nasal swab specimens, - for determination of the subtype of seasonal human influenza A virus, as seasonal A/H1 or A/H3, if present, from viral RNA in nasopharyngeal and/or nasal swab specimens, - for presumptive identification of virus in patients who may be infected with influenza A subtype A/H5 (Asian lineage) from viral RNA in human respiratory specimens and viral culture in conjunction with clinical and epidemiological risk factors. - to provide epidemiologic information for surveillance for influenza viruses.

The CDC Human Influenza Virus Real-time RT-PCR Detection and Characterization Panel (rRT-PCR Flu Panel) is a panel of oligonucleotide primers and dual-labeled hydrolysis (TagMan®) probes which may be used in real-time RT-PCR assays using the ABI 7500 Fast Dx Real-Time PCR instrument for the in vitro qualitative detection and characterization of human influenza viruses (RNA) in respiratory specimens from patients presenting with influenza-like illness (ILI). Detection of viral RNA not only aids in the diagnosis of illness caused by seasonal and novel influenza viruses in patients with ILI, but also provides epidemiologic information on influenza and aids in the presumptive laboratory identification of specific novel influenza A viruses.

The Influenza A/H5 (Asian Iineage) Virus Real-time RT-PCR Primer and Probe Set is intended for the in vitro qualitative detection of Influenza A/H5 (Asian lineage) virus RNA either directly in patient respiratory specimens or in viral cultures for the presumptive laboratory identification of Influenza A/H5 (Asian lineage) virus. Testing with the Influenza A/H5 (Asian lineage) Virus Real-time RT-PCR Primer and Probe Set should be used in conjunction with other laboratory testing and clinical observations for the following indications: - Providing epidemiological information for the surveillance of human infection with Influenza A/H5 (Asian lineage) virus - Identifying patients who may be infected with Influenza A/H5 (Asian lineage) virus based on clinical and epidemiological risk factors The definitive identification of influenza A/H5 (Asian lineage) either directly from patient specimens or from viral cultures requires additional laboratory testing, along with clinical and epidemiological assessment in consultation with national influenza surveillance experts. Negative results do not preclude influenza virus infection and should not be used as the sole basis for treatment or other patient management decisions. Use of this assay is limited to Laboratory Response Network (LRN) designated laboratories.

The Influenza A/H5 (Asian lineage) Virus Real-time RT-PCR Primer and Probe Set is composed of 2 primer pairs (4 unlabeled oligonucleotides) and 3 labeled probes, along with an inactivated virus control. These reagents are for use in single-tube realtime RT-PCR testing to directly detect novel Influenza A virus specific RNA in human respiratory specimens, or in viral cultures. The real-time PCR process simultaneously amplifies and detects nucleic acid targets in the same reaction. The primer and probe sets (FluA2 and FluA3) target two distinct RNA regions that are both present in the influenza A/H5 (Asian lineage) hemagglutinin (HA) gene of highly pathogenic H5N1 viruses from the Asian lineage. These target regions were chosen to allow specific detection of Asian lineage influenza A/H5 viruses without detection of other influenza virus subtypes, including the North American lineage influenza A/H5 viruses (e.g., avian H5N2 strains). Note: There are two lineages of avian influenza A/H5 viruses: the Eurasian (Asian) and North American (American) lineages. Viruses from these two lineages are genetically different. All known human influenza H5 infections have been caused by highly pathogenic viruses of the Asian lineage. Primers/Probes: The 2 primer and probe sets (FluA2 and FluA3), each target a different region within the HA gene. The FluA2 target is in the HA2 region of the HA gene and the FluA3 target spans the cleavage site of the HA gene. These sets were selected from multiple candidates based on preliminary assessment of reaction efficiency and primer-dimer effects. FluA2 contains an equal mixture of two probes, to ensure optimum homology with viruses within both clades. The probes are labeled with FAM (6-carboxyfluorescein) and Blackhole Quencher™ 1 (BHQTM1). The BHQ chemistry is designed to minimize non-specific fluorescence. Experimental efficiency values of 100% +/- 5% are considered optimal. Tagman reaction efficiencies of FluA2 and FluA3 sets were demonstrated to be 100.6% (R2=0.996) and 100.3% (R2=0.996). Influenza A/H5N1 positive control (500 µL of virus suspended in 0.01 M PBS): a reverse-engineered vaccine candidate virus that may safely be handled in BSL-2. Inactivated with beta- propiolactone (0.05%). The reassortant virus is noninfectious in chickens and USDA has removed it from the select agent list, classifying it as a BSL2 infectious agent. Additionally, the inactivated virus preparation is non-infectious in embryonated chicken eggs. Other reagents or accessories required to perform testing with the device are: Qiagen QuantiTect™ Probe RT-PCR Kit (Qiagen), a master-mix for reversetranscription and cDNA amplification. Materials for extraction and purification of specimens (three commercial extraction kits are suggested for use in isolating RNA in the test procedure based on specifications meeting the requirements for quality of RNA to be used in the FluA2 and FluA3 reactions). These extraction procedures were used during development and testing of the Influenza A/H5 (Asian lineage) Virus Real-time RT-PCR Primer and Probe Set. An RNase P (RP) Real-time PCR Primer and probe set that targets the human ribonuclease P (RP) sequence. Extracted clinical specimens should contain human RNA. The RP assay thus serves as a control to ensure RNA resulted from the extraction of clinical specimens.