Is it a season of Fever?

So today was the second day I work after 5 and a half day I MC last week. It was fever, flu and sore throat. Bad ones, which made me cough a lot.

Before that, it was my mother. She had 7 days MC - she's a teacher. She said that she had this kind of chill where if we open the fan she'll tremble a lot... Luckily she's fine now.

At the office, it mas my friend - she had 5 days MC. She says that on the first day the hospital also quarantine her. And not to forget my boss's brother, he also had MC these few days. The caused is - FEVER!!