A(n) __________ vaccine is used in some parts of the world to reduce the spread of tuberculosis.

Question

Quizplus · Accepted Answer

An attenuated vaccine is made from weakened versions of the bacteria or virus that causes the disease. The Bacille Calmette-Guerin (BCG) vaccine, which is used in some parts of the world to reduce the spread of tuberculosis, is an attenuated vaccine. The weakened bacteria in the vaccine can still stimulate an immune response in the body, but they do not cause disease. This type of vaccine is effective at preventing tuberculosis in some populations, but it is not widely used in the United States because of the low risk of tuberculosis in this country.

A(n) __________ Vaccine Is Used in Some Parts of the World