SmackDown star works sick; The Usos are upset about it

WWE are still tapping shows and WrestleMania from the Performance Centre and they have been very careful about it. They have reportedly started checking every single person getting in and out of the place and are not allowing those above a certain temperature to get in.
However, reports suggest that The Miz was unwell and still worked on SmackDown last night. The one-half of the SmackDown tag-team champions is now set to take part in the Triple-threat Ladder match for the tag-titles as well at WrestleMania 36.
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Dave Meltzer of WON reported that The Usos were not happy with The Miz working despite being sick and other reports suggest there could be a connection between that and Roman Reigns pulling out of the Universal Title match.
It had to do, in some form with Miz being sick and The Usos not being happy about it and I don't really know much else. That's really all I was told.
Ryan Satin of Pro Wrestling Sheet reported earlier in the week that Reigns had made the decision of not working at WrestleMania.