This sexually-transmitted virus has been around for 69 years and is marketed by two companies: LGC Standards (headquartered in the UK) and ATCC (headquartered in the US).

The LGC Group is:

"…the UK's designated National Measurement Institute for chemical and bioanalytical measurements and an international leader in the laboratory services, measurement standards, reference materials, genomics and proficiency testing marketplaces."

One of its branches, LGC Standards, is:

"…a leading global producer and distributor of reference materials and proficiency testing schemes. Headquartered in Teddington, Middlesex, UK, LGC Standards has a network of dedicated sales offices extending across 20 countries in 5 continents and more than 30 years experience in the distribution of reference materials. These high quality products and services are essential for accurate analytical measurement and quality control, ensuring sound decisions are made based on reliable data. We have an unparalleled breadth of ISO Guide 34 accredited reference material production in facilities at 4 sites across the UK, the US and Germany."