<prompt> The term perinatal covers the period from -28 weeks gestation to one week after bihFirst 4 weeks after bih28 weeks gestation to one month after bih24 weeks gestation to one week after bih  <response>: Perinatal covers from From 28 week of gestation to one week after bih. REF. PARKS TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 518 