Hi Doctor, my son is 2 months old and is due for 10 week vaccination on 9th of this month as we are out of station currently and trying to get him vaccinated here. vaccine : prevenar 13 first dose we gave at Hyderabad was manufactured by John Wyeth company now for second dose here in Tamil Nadu same vaccine we are getting Pfizer as manufacturer. are both companies are same ? can we proceed with Pfizer manufacturer. ps: both are imported and marketed by Pfizer limited. please suggest.