Polio vaccine is usually provided in vials containing 10–20 doses of vaccine. A single dose of oral polio vaccine (usually two drops) contains 1,000,000 infectious units of Sabin 1 (effective against PV1), 100,000 infectious units of the Sabin 2 strain, and 600,000 infectious units of Sabin 3. The vaccine contains small traces of antibiotics—neomycin and streptomycin—but does not contain preservatives. In a generic sense, vaccination works by priming the immune system with an 'immunogen'. Stimulating immune response, by use of an infectious agent, is known as immunization. The development of immunity to polio efficiently blocks person-to-person transmission of wild poliovirus, thereby protecting
His Name Is Nobody His Name Is Nobody His Name Is Nobody is a 1979 Hong Kong martial arts comedy film written and directed by Karl Maka and starring Lau Kar-wing, Dean Shek and Bryan Leung. The Nobody Kid (Lau Kar-wing) is a street urchin whom was abandoned as a child and did not have a name. One day, he meets master con artist, Sting (Dean Shek), who takes Nobody as his disciple and teaches him swindling and martial arts skills. The duo is later enlisted by Sting's brother, Baldy (Karl Maka), to murder Ping the Dreg (Chung Fat), a professional assassin. Sting and