Transfusion-transmitted viral infections (TTVIs)

Ever since the advent of the global human immunodeficiency virus epidemic, transfusion medicine has maintained a heightened awareness of the potential risk of transmitting infection through blood transfusions. Hepatitis A is an acute infectious disease of the liver caused by the hepatitis A virus. The hepatitis B virus has a complex coiled genomic structure. By sequencing of Hepatitis C virus genome, so far six different genotypes with numerous sub types can be identified. Lentiviruses constitute the basis of their genetic features of a subset of the family of retroviruses and are responsible for a variety of neurological and immunological disorders. Retroviruses are lipid coated and widely distributed in nature, with examples in insects, reptiles, and almost all mammals. Dengue virus infections pose a major international public health concern. Herpesviruses are spread all over the world and can infect all creatures.