Worm seen in new chook poo

I Flubenvetted my 3 old girls in March and the two new ones are doing more than normal runny smelly poos so I assumed settling down, change of diet etc because I poked about and there were no worms. They're all as healthy as can be!
When cleaning out the coop this morning I found one worm in a fairly fresh poo....white, about an inch+ long and like very thin spaghetti. It was dead.
Can I worm them all again so soon?

yes definitely worm them again