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leva [86]
3 years ago
5

Vaccines were developed to provide immunity to a viral infection. Which of the following is a likely hypothesis of why the small

pox vaccine is no longer given?
Smallpox only infects people who have not been vaccinated for chicken pox
The smallpox vaccine was given for a long period of time and the disease no longer exists
Smallpox only exists in some parts of the world so there is no need to vaccinate everyone
The smallpox virus has mutated and so the vaccine is no longer effective
English
2 answers:
Brrunno [24]3 years ago
7 0

Answer:

The smallpox vaccine was given for a long period of time and the disease no longer exists

Explanation:

devlian [24]3 years ago
6 0
Small pox was a  huge problem during the pre revolutionary war erra but was not successfully araticated until the late 70s, it was wiped out because people where vacinated at a very young age. so the answer is B The smallpox vaccine was given for a long time and the disease no longer exists.

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