Answer:
for all my k-12ers the correct answer is one to two days.
Explanation:
I had put the answer as seven to eight hours and i got it wrong and it told me the correct answer is one to two days. Have a good day.
 
        
             
        
        
        
Answer:
My health teacher said it could be all so D
 
        
             
        
        
        
The flu is spread every 30-45 years since the 16th century, so we know when to prepare and how to do it. Also, we have learned where it will strike and the containment. Hope this helps! :)