Autism Spectrum Disorders (ASDs) are a group of developmental disabilities that can cause significant social, communication and behavioral challenges. CDC is working to find out how many children have ASDs, discover the risk factors, and raise awareness of the signs.
For premature babies, Pampers also carries two extra small sizes. These fit babies who weigh 4 to 6 pounds. Parents may have difficulty finding these sizes in stores, but they can certainly find them online.
PP is right-some babies don't fit the newborn size at birth. My son was just over 9 lbs at birth & fit into size 1. That said, I'd recommend cloth diapers-they're cheaper, better for the environment, softer, and they're not made of chemicals, plastic, and bleached chemicals.