Can one corals death cause a chain reaction?

[swill]

I have a stony flower poylp type coral that I bought recently (don't know the name) and I noticed it was on it's way out but I left it in the tank to see if maybe only parts of it would die off and some would be left. This morning I wake up to it completely gone and now other corals around it are bleached. Is this like a chain reaction or could they just be mad and may come back. What should I do? I did remove the dead coral but should I be worried now that all the bleached coral will just keep spreading to other coral around them?????