# Eventmath/Lesson plans/Using inclusion-exclusion to understand COVID reinfection

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Lesson plan overview
TitleUsing inclusion-exclusion to understand COVID reinfection
Assumed knowledgeStudents are expected to have basic knowledge of combinatorics; basics of counting, permutations and combinations.
ActivitiesStudents will read an NPR article discussing the reinfection rate of COVID-19, and then they will create a combinatorial model.
Class time30-45 minutes
Source
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## Activities

2. Discussion:Students will be discussing the stated opinions and will be asked to point out the mathematical evidence to support those opinions in the article.

## Assignments

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## Resources

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### Background

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