The danger from being infected from germs or viruses through cash is highly overrated. Studies have shown that among bank notes, microorganisms can survive for

The danger from being infected from germs or viruses through cash is highly overrated. Studies have shown that among bank notes, microorganisms can survive for a significant time only on bank notes made of polymer. Most bank notes in the world, including US dollar bills, are made of cotton, linen or a blend of the two whereon microorganisms tend to dry out more quickly. Copper is antimicrobial, and that includes "gold" coins, of copper alloy. Most "silver" coins, including those in circulation in the US and most of the EU are of copper alloys too. Steel coins are not so good though. Bank of England has summarised several studies (starts 1/3 down the page) :<https://www.bankofengland.co.uk/quarterly-bulletin/2020/2020-q4/cash-in-the-time-of-covid https://www.bankofengland.co.uk/quarterly-bulletin/2020/2020...>