“Learn the Signs. Act Early.”

Print
Related Pages

The page you were looking for has moved.

You will be automatically redirected to the new location in 10 seconds or you can click here to go toLearn the Signs. Act Early.

Please update any bookmarks you may have saved for this page.

Last Reviewed:September 5, 2025
Source:National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention