Plaq is not known to lower your immune response it is mainly given to help with fatigue,rashes and joint issues.
Perhaps you have been in the Dr's offices more this season?or pharmacy?And this yr has been really really bad with colds,flus and general illness.
Hope you feel better soon.
I too have had a tougher than normal time this year but I am not on Plaq but Aralen(Kind of in the same family)
SLE w/Sjogrens Overlap and Raynaud's diagnosed in 2007.Fibro in 2009.
The Early Bird May Get The Worm But the Second Mouse Gets The Cheese.