Mareks

I had 2 girls come down with Marek's so I isolated them both. I checked them regularly to make sure they were ok and tried to give them water. Next day I come to check expecting the worst. Maybe they dead...nah they just fucken jumping around like crazy. They legit were unable to move not even 12 hours before hand. Is it like a delay? Or did they somehow get better? Will check tomorrow if they are still ok since it's currently night-time. I am just so confused.