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{n: Jenner, Edward Jenner} English physician who pioneered vaccination; Jenner inoculated people with small amounts of cowpox to prevent them from getting smallpox (1749-1823)

{n: acquired immunity} immunity to a particular disease that is not innate but has been acquired during life; immunity can be acquired by the development of antibodies after an attack of an infectious disease or by a pregnant mother passing antibodies through the placenta to a fetus or by vaccination

{n: inoculation, vaccination} taking a vaccine as a precaution against contracting a disease

{n: protectiveness} the quality of providing protection
"statistical evidence for the protectiveness of vaccination"

{n: ring containment} a strategy of defense in cases of bioterrorism; vaccination only of people exposed and others who are in contact with them
"ring containment is a proven method of halting a smallpox epidemic"

{n: ring vaccination} administering vaccine only to people in close contact with an isolated infected patient; prevents the spread of a highly infectious disease by surrounding the patient with a ring of immunization

{n: vaccination} the scar left following inoculation with a vaccine

{v: immunize, immunise, inoculate, vaccinate} perform vaccinations or produce immunity in by inoculation
"We vaccinate against scarlet fever"
"The nurse vaccinated the children in the school"

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