Non-enveloped viruses transmitted by blood and blood products

Since the advent of solvent detergent (S-D) treatment for inactivation of enveloped viruses, there has been no transmission of human immunodeficiency virus, hepatitis B virus, or hepatitis C virus by treated blood products. However, shortly after the introduction of S-D treatment, transmission of hepatitis A with S-D treated factor concentrates was reported in Germany, Italy, Ireland, the United States and South Africa, and this raised awareness of the potential for blood transmission of non-enveloped viruses in general. This report summarizes the physical and epidemiological features of three non-enveloped viruses, hepatitis A virus, parvovirus B19, and the recently identified TT virus, and their transmission by blood and blood products.