This bingo card has 17 words: Free!, assign, avoid, confirm, contain, determine, expose, immune system, infect, mystery, overwhelm, protect, rare, spread, symptom, vaccine and virus.
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Learn how to conduct a bingo game.
With players vying for a you'll have to call about __ items before someone wins. There's a __% chance that a lucky player would win after calling __ items.
Tip: If you want your game to last longer (on average), add more unique words/images to it.