people paying with debit cards only?

I read a article about how a resteraunt would only except credit cards becasue of the coronavirus the corona virus can only spread by people to people touching, coughing, etc. lets say you have the diseaiese and you put your hand on it and the cashier touched your money now he has the dieseies and lets say the next person wants change for 5 and now he has the diesies to in thgat shop they are so afraid that they are using digatil currency's like samsung pay, apple pay,paypal etc. and credit cards like Visa Inc., Mastercard Inc., American Express Co., so the cashier wont have to touch your money.