Torque Teno Virus(TTV) , for transfusion transmitted infection or torque teno infection was first announced in a Japanese patient in 1997 by the examination researcher T. Nishizawa. The infection is very normal, even in solid people as much as 100% pervasive in certain nations, and in around 10% of blood contributors in the UK and the US. Despite the fact that it doesn't seem to cause side effects of hepatitis all alone, it is regularly found in patients with liver malady.Generally, TTV disease is accepted to be asymptomatic.At first found in Japanese patients with hepatitis of obscure reason, TTV was recognized in different populaces without demonstrated pathology, including blood benefactors. This new infection was at first found in 1997 by methods for authentic distinction investigation (RDA) in the plasma of a Japanese patient (initials T.T.) with posttransfusion hepatitis. An arrangement (N22) of 500 nucleotides (nt) was first portrayed and further reached out to around 3700 nt (TA278 clone). Around then, grouping examination proposed that TTV was identified with the Parvoviridae family. Toward the finish of 1998, two autonomous investigations exhibited the nearness of an extra GC-rich district of around 120 nt.