Welcome to Pettalk first off! I do extensive rescuing, and have taken hundreds of kittens and their moms off the streets over the years. I worm them right away providing they're healthy, which the majority are. If old enough I also do their first distemper shots. Fleas get treated with Advantage. Ridding animals of internal and external parasites is first and foremost, and you did all the right things for this baby! Let your son cuddle and kiss her all he wants...she's fine! Hope that the mom cat & the rest of the kitten's needs are addressed as well. A friendly cat shouldn't have to stay outside reproducing endlessly, nor should the other kittens stay outside getting wilder by the day. Hope someone takes the rest under their wing. Jan