Are these worm eggs?!?!?

My cat has worms and was let into the baby’s room “accidentally” while I was gone. And of course he slept in the crib. I was looking in it and seen these. Are these tapeworm eggs?? And what should I do? This was a thick waterproof cover on the mattress so I took it off and am washing it in hot water. Will I need to do anything to the mattress itself? Nothing touched it but I still want to be sure. Trying to get rid of the fleas and worms btw so don’t bash me pls.