Here is a free, fun and intriguing way to test your safety knowledge. Every week, you’ll receive an email with a question to answer. Compete for prizes, compare your score to colleagues, and enjoy!

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This Week's Question

According to the World Health Organization (WHO), what is the incubation period—or the time interval from infection to onset of symptoms—for the Ebola virus disease?
A) 10 to 24 days
B) 8 to 10 days
C) 2 to 21 days
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