You are here Home Glossary of technical terms Glossary of technical terms preterm infant Listen Print Share Twitter Facebook Email An infant born prematurely. Preterm infants are those born at <37 weeks gestation. Extremely preterm infants are those born at <28 weeks gestation. Page history Last updated 11 June 2018 Last reviewed 11 June 2018 Is there anything wrong with this page? Help us improve the Australian Immunisation Handbook What you were doing? (required) What went wrong? (required) Leave this field blank