Can someone with PMR get a flu vaccine?

hii,
I was diagnosed PMR in Nov. 2016, and was put on 20mg, Prednisone which relieved my symptoms within a day. Since then I reduced to 15mg, then 10mg, (and a short stint of 7.5mg which left me in pain - Rheumy's suggestion to get off the Pred more quickly... duh, nope), so I informed my GP and went back up to 10mg in Feb, '17, where I have been since. I'm still achy all the time, with bouts of random pain, roaming from shoulder to shoulder, upper arm muscles, occasionally hands, but rarely.

Thanks!

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