The U.S. Centers for Disease Control and Prevention has said that "there is no evidence to support transmission of COVID-19 associated with food or food packaging (currently)."
However, precautions are suggested to ensure people's safety. Contactless delivery is a must, according to the Chinese Center for Disease Control and Prevention.
Contactless delivery means that the food is placed at a designated area instead of being delivered right to the front door, ensuring no physical contact with whoever placed the order. Don't exchange paper money and have everything paid by credit card or otherwise electronically.
It's suggested to avoid ordering raw or uncooked food, such as sashimi, since these food haven't been sterilized by high temperature. Reheating the food also makes it safer to eat.
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