Question

Sydney received a measles vaccine a few years ago. While vacationing at an amusement park, he comes into contact with the measles virus. Because he had previously received the measles vaccine, how will his immune system MOST LIKELY respond? A. It will NOT recognize the measles virus and won’t be able to fight it off. B. It will recognize the measles virus and be ready to fight it off. C. It will ignore the measles virus. D. It will help the measles virus to make more copies of itself

Answer 1

d is corect i justt took the test and got 1000

Answer 2

Because Sydney received a measles vaccine, his immune system will most likely recognize the measles virus and be ready to fight it off. The measles vaccine contains a weakened form of the virus, which stimulates the immune system to produce antibodies against the virus. These antibodies remain in the body and can quickly recognize and fight off the virus if the person is exposed to it in the future. This is the purpose of vaccination - to prepare the immune system to respond to a particular pathogen if it encounters it later on. Therefore, option B is the correct answer.