Influenza A virus (H1N1) (ATCC® VR-825)

Classification: Orthomyxoviridae, Influenzavirus A  /  Product Format: frozen 1 mL per vial

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Classification Orthomyxoviridae, Influenzavirus A
Deposited As Influenza A virus
Agent Influenza A virus (H1N1)
Strain A/WS/33
Demonstrates cross-reaction with PR 8 and swine influenza.
Influenza Research
Biosafety Level 2
Product Format frozen 1 mL per vial
Storage Conditions -70°C or colder
Third edition of HHS Publication No.(CDC)93-8395 notes NO reports of laboratory-acquired infection with A/WS/33.
This strain is not neurotropic for white adult mice.
Demonstrates cross-reaction with PR-8 and swine influenza.
Type H1N1.
Effect on Host
Hemagglutinates chicken RBC
Recommended Host
SPF chicken embryonated eggs, 10-11 days
Growth Conditions Temperature: 33°C to 34°C
Recommendations for Infection: Dilute virus in D-PBS prior to inoculation.
Incubation: 2-3 days with humidity and a non-CO2 incubator
Effect on Host
Hemagglutinates chicken RBC
Name of Depositor WA Chappell
Source Patient with influenza, throat washing, London, 1933

Smith W, et al. A virus isolated from influenza patients. Lancet 2: 66-68, 1933.

Burnet FM. A genetic approach to variation in influenza viruses; the characters of three substrains of influenza virus A (WS). J. Gen. Microbiol. 5: 46-53, 1951. PubMed: 14824469

Notice: Necessary PermitsPermits

These permits may be required for shipping this product:

  • Customers located in the state of Hawaii will need to contact the Hawaii Department of Agriculture to determine if an Import Permit is required. A copy of the permit or documentation that a permit is not required must be sent to ATCC in advance of shipment.
Basic Documentation