Received from my AVG that a threat was secured

This threat pops up on my AVG every couple of days.  Script:SNH=gen[Trj]  AVG says it has secured the threat with a check mark with a circle around it. Then it say…

We've safely aborted connection on: nanabordercollie.blogspot.com
because it was infected with Script:SNH=gen[Trj]

We can also protect you with from other types of threats
          UPGRADE YOUR PROTECTION

Threat name           Script:SNH=gen[Trj]
Severity                   only 1st bar is green
URL                         http:nanabordercollie.blogspot.com/feeds/posts/default
Process                   C:Windows\System32\msfeedssync.exe
Detected by             Webshield
Status                       Connection aborted

This popped up about 3 or 4 times in the last few days. I emptied my cache and history and restarted computer thinking, okay, this website is off my history so no more notification from AVG but today it happened again. I did a avg scan of computer and a malwarebyte scan and neither showed this trojan coming up.

How do I get rid of this trojan??? I read it can damage your computer seriously. 

Thanks for any help I can get!!!