Biology
Biology, 23.05.2021 14:00, morganlynn18

In the 1950s , the polio virus paralyzed many children for life. Today, polio has been reduced by 99 percent. Which of the following has played the greatest role in reducing polio infections worldwide? Social media : Itsjackenley


In the 1950s , the polio virus paralyzed many children for life. Today, polio has been reduced by 9

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In the 1950s , the polio virus paralyzed many children for life. Today, polio has been reduced by 99...

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