IT has a beautiful name: Elisa. Its to Elisa that people go to find out whether they are infected with the HIV virus. Elisa is not the name of a woman. Its short for enzyme-linked immunosorbent assay, a method of testing human immunodeficiency virus (HIV) in use following the first world AIDS congress in Atlanta, USA, in 1985.

Elisa is a reliable testing method. The size of a photocopying machine, it can detect blood infection by HIV with 99.8 per