Thanks for the views.
There is no virus over there, not to my knowledge at least. Probably the warning is due to Google Analytics code trying to install the tracking cooki. If you have installed Avast antivirus, probably you would get the warning. May be few other antivirus software would also take it the same way. I have checked it by removing the analytics code. If it is not there, warning does not appear. However, to be on the safer side, I will check with my host as well.