yes you need to inspect and then clear it.

How to clear an erroneous "Still Infected" status from Reports in the Symantec Endpoint Protection Manager

http://service1.symantec.com/SUPPORT/ent-security.nsf/docid/2007111913145448 

 Yes Still infected status has to be manually removed from the logs.
You have to first read whether what action was taken
left-alone, partially-Cleaned,blocked,access-denied etc
if it says deleted, cleaned then you can just go ahead and clear the status however if anything else then should visit the system and make sure it is clean by running full scans etc.

where do you view the action taken from the Computer Status Logs screen? Am I goign to have to run a seperate report to know that?

open sepm
logs
scan log or system log wil give you more info 

You need to check risk log Risk log

vikram is rigth, its under risk log.i was wrong.:) 

maybe I'm just exceptionally lazy, but is there a way to view the action taken on a virus, and to clear it status from the same report??

I'd assume that if somethings no longer a "Risk", and his moved to Current Virus', that a cleaning action took place: left-alone, partially-Cleaned. If it were blocked, or access-denied, wouldn't it still be a Risk? If thats the case it seems a little redundant to check the Risk Log.

in that case, remove all the infected status as per the above doc,
monitors - logs - computer status
at the bottom
click on advanced and select infected only.
clear all ( control + click) 
check if it comes back tomorrow, if infected wil surely come, if not all is well ;)  

What version are you running LoXodonte? 

Grant-