Flu Vaccines Have Been Demonstrated to Protect the Elderly,as Shown

question 41

Multiple Choice

Flu vaccines have been demonstrated to protect the elderly,as shown in the figure below.Assume there is a sample of 100 elderly people that normally would be hospitalized in winter.How many of them would you predict would still be hospitalized in the winter if all 100 of them received the flu vaccine?

• A) 27
• B) 48
• C) 52
• D) 73

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Definitions:

Black Soldiers

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American Colony

Regions or territories controlled and settled by the United States, especially during the period of expansion and imperial acquisition in the 19th and early 20th centuries.

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An uprising in China between 1899 and 1901 aimed at expelling foreign influence in religion, politics, and trade.