What are the chances of multidose vaccine vials getting infected with
HIV or Hepatits viruses? I have heard the multidose vials have preservative like Thimerosal and during vaccination mostly AD syringes are used. But If a used needle with HIV or Hepatits blood is accidentally inserted into the vial what are the chances of vials getting infected? If a next baby given the same vaccine with infected vial but with new syringes what are the chances of getting infection?