It is important to always clean up using proper chemicals following working with a virus. Failure to do so may leave active virus on a surface or in a medium and present a potential hazard. This study was done to determine if viruses from the Flaviviridae, Adenoviridae, and Picornaviridae families can remain active for more than three weeks on a dry surface or in a liquid medium.
Bills, Cody J. and Day, Craig W., "Virus Survival Without Hosts" (2017). Biology Posters. Paper 137.