Welcome back! Funny theme even if I didn't get all the themers. A few non-theme rough spots:
In 1A I think it should be “capital” rather than “capitol”.
In 20A, there are no directions NWN and SES. ("Parisian possessive" is a common clue; I'd rather clue with something about socioeconomic status, but the only non-dupe ways I can think of right now are way too roundabout and tricky…)
In 31A, E. coli is a bacterium and norovirus is (no surprise) a virus, so I was a bit confused.