Would you be worried if someone you know consistently texted every day or few days and suddenly stopped for 8 days in a row?

Normally he communicates about every few days. If he is sick or busy, I hear from him in 4 or 5 days the most. Last time I heard from him was last Sat. night. Frankly I'm a little worried.

Would you be worried if someone you know consistently texted every day or few days and suddenly stopped for 8 days in a row?
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