To become infected; to be contagious — when an illness, virus, etc., spreads to a person or animal.
風邪が家族にうつってしまった。
The cold spread to my family.
インフルエンザは接触でうつりやすいので注意してください。
Influenza is easily transmitted by contact, so please be careful.
その病気は人から人へうつることが確認された。
It was confirmed that the disease is transmissible from person to person.