The existence of viruses as obligate intracellular parasites with high mutation rates sets them apart from other forms of life in fundamental ways. Frequent errors in replication and assembly processe...

Cellular coinfection between multiple virions is a common feature of viral infections. The collective virus-virus interactions enabled by these coinfections can influence the fitness of viral populati...

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New research has uncovered a social world of viruses full of cheating, cooperation and other intrigues, suggesting that viruses make sense only as members of a community.

The antigenic evolution of the influenza A virus hemagglutinin (HA) gene poses a major challenge for