When possible I avoid paying by cash and use contactless payments as much as I can, especially as of late. However, some outlets won't take card payments so cash exchange is inevitable.
I am worried about the potential that coronaviruses may have to survive for relatively long periods of time (days) on banknotes. Obviously I am thinking specifically about the COVID-19 infection given its current quasi-pandemic status but, despite the many news articles, I do not believe there are studies that have zeroed in on it yet.
I have found the following studies:
- Survival of Influenza Virus on Banknotes
- Paper Money and Coins as Potential Vectors of Transmissible Disease
- Persistence of coronaviruses on inanimate surfaces and their inactivation with biocidal agents
- Filthy lucre: A metagenomic pilot study of microbes found on circulating currency in New York City
The first is a study about influenza viruses and not coronaviruses.
The second article mentions coronaviruses only once but they are not the subject of the study.
The third study is recent (mentions SARS-CoV-2) and is about coronaviruses, but it deals with other inanimate surfaces, especially stainless steel, and does not mention money or banknotes.
The fourth study is a pilot, which deals specifically with banknotes (US dollars) but, since both samples in the study returned a low viral count ("In both sets the number of archaeal and viral sequences detected was low (< 1%), and were not analyzed further.") they did not drill down into specifics.
I am more worried about paper money and less worried about coins, as coins can easily be wiped with a disinfectant which can effectively kill viruses.
The specific question I have:
Can coronaviruses survive in sufficient concentration (sufficient means enough to enable it to reach the respiratory tract via finger contamination) on banknotes, and for how long?
I am not looking for news articles, even if they come from reputable sources (such as The Guardian, BBC, CNN, etc.). I am after studies that demonstrate virus survival rates.