The Covid-19 pandemic significantly altered certain human social behaviors. For instance, it is now seen to be perfectly ok to ignore someone. You would be pushing it if you ask for a handshake. Essentially, the less contact the better.
Which is why physical paper money was also a point of concern for health authorities as it was perceived to be one of the many super-spreaders. For instance, in March 2020, the Central Bank of Kenya announced that all currencies evacuated by commercial banks to its vaults would be quarantined for a week before being released back into circulation.
