Can coronavirus spreading be the cause?
No, crypto journalists just have this habit of explaining Bitcoin's price movements with some totally unrelated world events, because that's what generates traffic for their sites - no one wants to hear how Bitcoin is volatile and goes up or down as the result of pure speculation, because that's so boring.
Just think about it, why would the coronavirus impact bitcoin's price? It has no effect on how the bitcoin network works, or how people might use Bitcoin. And the effect on mining farms in China is still very small.