Scientists have revived eons old ‘zombie viruses’ from the Siberian permafrost and have admitted there is a risk that “ancient viral particles” will remain infectious and “get back into circulation.” Out of the 13 new viruses that have been identified, the oldest is a 48,500-year-old amoeba virus, according to the findings posted by researchers in the pre-print server bioRxiv, who boasted... 

The world’s largest virus has been discovered off the coast of Las Cruces, Chile. Appropriately named Megavirus chilensis, it is about 10 to 20 times larger than the average virus and 6.5% bigger than its nearest competitor, the Mimivirus. The Megavirus measures about .7 micrometers (thousandths of a millimeter) in diameter and is an oddity among its virus brethren, which are usually smaller...