W32.Kelvir Virus

I'm new and don't know if this was the proper place to pose this question but here it is.  I had an experience with Maljava virus that completely infiltrated my computer even after Norton said it was quarantined.  I had to completely start my computer from scratch and was very lucky that I could do that.  Now I'm showing W32.Kelvir virus which norton says is quarantined.  However, can I be fully confident that this is true.  There is not much info on this virus just that it infiltrated messaging.  Any help on this issue will truly be appreciated.