According to the International Guidelines for Neonatal Resuscitation (2000), only approximately 5-10% of newborns will require some degree of active resuscitation (stimulation to breathe) at birth, which can vary from simple skin rubbing to suctioning or full resuscitation. This in turn means that 90-95% of all newborns need no assistance breathing at birth.
BabyM received his vitamin K shot within an hour of his birth last December. He was skin-to-skin and nursing (both of which reduce pain) when he received the shot, and he didn't even appear to notice. I was happy to know that he was protected from vitamin K deficiency bleeding (VKDB).