Giant virus

Several giant viruses (Megaklothovirus horridgei, Pithovirus sibericum, Klothovirus casanovai, and Mimivirus) compared to E. Coli bacterium and normal size virus (HIV)

A giant virus, sometimes referred to as a girus, is a very large virus, some of which are larger than typical bacteria. All known giant viruses belong to the phylum Nucleocytoviricota.