Dear,  don't worry If u getting afraid once u consult physically  any good physician in one big tertiary unit hospital so that u wl get ride of your problem

Take a recent packed vaccine.

Particular batch of any drugs or vaccines gets tested in Govt approved labs, before being released in the market , hence you will always see the batch number and date of manuf. in a med or vaccine or other medical products. The batch number with date of manufacter is written when any vaccine is given,  in OPD or vaccine card of the pt as a record and should be asked and taken by any one who takes vaccine .some centers even put the vial sticker on the vaccine card as a proof. Most well reputed multinational drug companies ,present in India follow GMP , and get  approval for GMP certification. Bio med is also c GMP certified  company. Now for the vaccines , OPV and Rabis vaccine. OPV is trivalent  live attenuated vaccine , hence there are chances of vaccine associated polio, ( 1 case in 1 million doses given ). since 2016 OPV is now bivalent ie polio virus 2( probable cause of vaccine associated polio)  has been removed from from OPV ( ie only 2 poilio virus strain are now in OPV. ( type 1 and type 3). Chances of contamination of vaccine are very rare and as OPV is  live ( but attenuated ) chances of contamination is extremly rarely possible. Rabies vaccine - prepared in vero cell, Rabies  vaccine is inactivated vaccine..ie not live virus , its killed virus in the vaccine. Hence  rabies vaccine associated rabies does not occur( CDC ,Atlanta,USA,  Reference)  .