CCleaner as nothing to do with viruses or any kind of "infection".
It's mostly used to "clean" temporary files etc. and possibly avoid getting the same virus again because a part of it was stuck in Temp files.
It does not block viruses nor does it lower your chances of getting one.
Get a nice free Antivirus Software, don't do stupid things of the internet and this will lower the chances making them almost nonexistent .