Strep bacteria survived frozen inside an unmanned Surveyor 3 probe on the moon until Apollo astronauts bought the probe back for the data recordings. In other words, it survived being frozen at -250 F inside a container which shielded it from UV rays for years and revived once exposed to Earth conditions again.
http://en.wikipedia.org/wiki/Reports_of_Streptococcus_mitis_on_the_Moon
Bacteria thaws and ‘wakes up’ then.
As for viruses .... [quick google blurbs ....]
Can flu viruses survive winter in frozen lakes? - health - 29 ...
Nov 29, 2006 ... Evidence of viruses frozen in Siberian lakes prompts scientists to ... “Our hypothesis is that influenza can survive in ice over the winter and ...
............
BBC News - 30,000-year-old giant virus ‘comes back to life’ - BBC.com
Mar 3, 2014 ... It was found frozen in a deep layer of the Siberian permafrost, but after it ... “If it is true that these viruses survive in the same way those amoeba ...