<prompt> False about vaccine is -Thiomersal is preservative in DPT vaccineKanamycin is preservative in measlesMagnesium chloride stabilizer used in OPVNeomycin is a preservative in BCG vaccine  <response>: BCG is the only widely used live bacterial vaccine. The WHO has recommended the Danish 1331 strain for production of the vaccine. There are 2 forms- Freshliquid and freeze-dried. Ref: 25th edition, Parks Textbook of Preventive and Social Medicine, Page no. 213 