Well, it depends on your experience of the 6th week vaccination... There are two options here- 1) The Acellular Pertusis VACCINE commonly known as Painless VACCINE which is less painful . 2) The whole cell Pertusis VACCINE which is painful and usually causes fever. You can choose either one...You can stick to your choice at 6th week vaccine if it was a comfortable experience

If you don't want your baby to get fever or swelling after vaccination, opt for the painless one. If you don't mind your baby developing swelling, getting fever, being cranky for 2- 3 days, get the ordinary one