October 02, 2026

Vax Facts Friday 10.2.26

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Q: If 10 susceptible (nonimmune) people come into contact with someone who has pertussis, how many of them could be infected? 

A. 2 
B. 4 
C. 6 
D. 10

 

 


 


 

 

 

 

The correct answer is D. 10
Pertussis is one of the most contagious diseases, so it is likely that all 10 people would be infected.
 

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