A football in Brazil can cause an epidemic in China. Zoe Li writes:

• To catch the 2014 football world cup viewers in China will have to get up between 3 and 6 am.
• This has led to a surge in demand for doctor’s notes online.
• A standard pack costs just $0.16. But one with a hospital stamp and a “doctor’s” diagnosis costs about $50.
• One vendor is even offering sick notes with a corresponding medical record at a hospital. These cost $100.
• At least one employer has given up. Rather than deal with sick leave excuses they’ve just offered employees vacation days during the event.

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Source: CNN