Washington - Restraints in infant car seats fit most newborns poorly, and low-birthweight infants in particular may not be well protected, Australian researchers say.

In their small study, fewer than one in five normal- and low-birthweight babies achieved a proper fit.

Historically, the smallest children’s car seats were designed for babies weighing between 6.5 and 9 pounds (about 3 to 4 kg) and do not account for lower-weight infants, said lead author Julie Brown, a senior research scientist at Neuroscience Research Australia in Randwick.

The U.S. Centers for Disease Control and Prevention (CDC) classifies children born weighing less than 5.5 pounds (2.5 kg) as “low birthweight” and says 8 percent of U.S. babies fall into this category.... Read More: VIN