If you are a system administrator, you see counts of the number of Newly Infected and Still infected computers in your site. If you are a domain administrator, you see counts of the number of Newly Infected and Still infected computers in your domain. Still Infected is a subset of Newly Infected, and the Still Infected count goes down as you eliminate the risks from your network. Computers are still infected if a subsequent scan would report them as infected. For example, Symantec Endpoint Protection might have been able to clean a risk only partially from a computer and thus Auto-Protect still detects the risk.