My ten month old baby had to stay in the hospital for 36 hours in June, and they shaved his right leg to put in an IV - it is now finally grown back so it looks better.....so maybe unless your baby is shaved, it wont take that long. I had a bout with tapeworm a few weeks ago and the vet said it was from eating a flea!!!! one quick pill to take care of it, but it was bad to see him sick again...Not sure where he even got the flea from, I have him treated with Advantix...but I guess that is the price of living in Forida!!!! Dont you worry, your baby's hair will grow back! I keep Toby cut pretty short BECAUSE of our hot and humid weather.