Parvovirus B19, which causes fifth disease in humans, is a member of the Erythrovirus genus of the Parvoviridae. Prior to 2014, it was also the name applied to a genus within the subfamily Parvovirinae, but this has been amended to genus Protoparvovirus to avoid confusion between taxonomic levels.
PVC redirects here. For other uses, see PVC (disambiguation). Polyvinyl chloride (/ËpÉlivaÉªnÉl ËklÉÉraÉªd/), more correctly but unusually poly(vinyl chloride), commonly abbreviated PVC, is the world's third-most widely produced synthetic plastic polymer, after polyethylene and polypropylene. PVC comes in two basic forms: rigid (sometimes abbreviated as RPVC) and flexible.
The Different Types of Plastics and Their Classifications. 1  Decoding Plastic. 2  Plastic marked with an SPI Code of 1 is made with polyethylene terephthalate, which is also know as PETE or PET. 3  The SPI code of 2 identifies plastic made with high-density polyethylene, or HDPE. 4  Plastic labeled with an SPI code of 3 is made with polyvinyl chloride, or PVC.