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
Sabin Willett Sabin Willett Peter Sabin Willett, known as Sabin Willett, (born March 6, 1957) is an American lawyer and novelist, a partner with the Philadelphia-based law firm Morgan, Lewis & Bockius, formerly a partner at Bingham McCutchen. He lives near Boston, Massachusetts. He is perhaps best known as a defense lawyer for several Uighur prisoners at the Guantanamo Bay detainment camp. Willett was educated in England at Gresham's School, Holt, and at Harvard College and Harvard Law School. As a lawyer, Willett concentrates his practice in commercial and bankruptcy litigation. He also represents a number of Uyghur captives in Guantanamo held