According to reports ,Megavirus chilensis was discovered or found off the coast of Las Cruces, Chile.
The previous largest virus was Mimivirus which was found at 1992, lurking in an amoeba in Bradford, England.
But now we have the new record of the mega virus with scientific name "Megavirus chilensis"
The virus' DNA features 1,259,197 base pairs, which encode some parasitic bacteria-like features. Unlike a virus, bacteria is a cellular organism — a virus can only infect and replicate itself within the cells of other organisms. It even has some built-in DNA repairing enzymes which allow the virus to repair damage from ultraviolet light, chemicals, and radiation.
Read the full details here:World biggest virus on Yahoo!