is Vaccine effective against COVID-19 deaths?

Factful math: Grade 4th-6th

Math skills: Percentage

Related Environmental issues: COVID-19

According to CDC, as of August 2, 2021, more than 164 million people in the United States had been fully vaccinated against COVID-19.

The study has found that 96% of COVID-19 deaths are among unvaccinated in the United States. Out of 25 people who have  died from COVID-19, how many people were unvaccinated? 

  1. 1%
  2. 13%
  3. 24%


Out of 100 people who have  died from COVID-19, 96 people were unvaccinated. Therefore, out of 25 people, which is 1/4 of 100, 24 [96/4=24] people were unvaccinated. 

Source: The New York Times, August 10, 2021. See the Data on Breakthrough Covid Hospitalizations and Deaths by State (Table: How Rates of New Covid-19 Hospital Admissions and Deaths Compare).

Factful Environmental Math Problems (2020)

About this book

The objective of Factful Environmental Math Problems is to cultivate our young people’s skills to analyze and evaluate fact-based data for understanding our world, while improving their math skills and critical thinking skills.

With the rise of the Internet and new technology, building skills to analyze and evaluate fact-based data becomes increasingly important for our young people to prepare for this rapidly changing world. These skills minimize their chances of being brainwashed by false information and making uninformed decisions and ultimately help develop their critical thinking skills. (Read more)

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Published: March 26, 2020

Price: $6.25