Question 31 of 65 Look at the picture "Steps in vaccination". Pathogens in a vaccine are either dead or What one word completes the sentence? Enter your answer Steps in vaccination A harmless virus particle is injected into a person The person already has antibodies that fight the infection immediately The body reacts and produces antibodies against the pathogen The person becomes infected with the virus at a later date The person now has antibodies against that virus The person does not get the disease

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Question 31 of 65 Look at the picture "Steps in vaccination". Pathogens in a vaccine are either dead or What one word completes the sentence? Enter your answer Steps in vaccination A harmless virus particle is injected into a person The person already has antibodies that fight the infection immediately The body reacts and produces antibodies against the pathogen The person becomes infected with the virus at a later date The person now has antibodies against that virus The person does not get the disease

Answer 1

The word that completes the sentence is "weakened".

Answer 2

The question asks for a term that best describes the state of a pathogen used in a vaccine. In a vaccine, pathogens are either dead or weakened such that they don't cause disease but still prompt the body to produce antibodies to deal with the similar virus in future. The condition where the living organisms are weakened to not cause disease is often referred as 'weakened or attenuated". While preparing a vaccine, the pathogens are either inactive/dead, or they may be weakened to such an extent that they lose their disease causing properties.

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