The US Federal Reserve isolates banknotes and metals brought from Asia for 7-10 days to prevent the spread of nCoV.

"We started to isolate US dollars brought from Asia before re-circulating them in the US financial system. This is a measure to prevent the spread of nCoV," a Federal Reserve spokesman said. (FED) told Reuters on March 6.

The 12 banks that manage the Fed's money supply will separate the USD back from Asia for 7-10 days before processing and redistributing to financial institutions. A Fed spokesman said the policy had been in place since February 21, but the United States did not sterilize paper money by ultraviolet rays or destroy them like China and South Korea.

"The Fed will liaise regularly with the CDC and the State Department to add other regions to its paper isolation list," the Fed spokesman said.

The Centers for Disease Control and Prevention (CDC) says the virus can be spread through objects that come in direct contact with patients, but confirmed that direct human-to-human contact is the main mode of transmission. The World Health Organization (WHO) recommends that consumers use contactless payments whenever possible.

USD is the most widely used currency in the world as a global reserve. The Fed said about US $ 1.75 trillion in cash is circulating globally, mostly abroad and especially in Asia, where the US dollar is often stronger than the local currency. A 2014 New York University study said about US $ 3,000 of the bacteria in the dollar bill because the currency is traded frequently.

Covid-19 started in Wuhan in December 2019. As of March 6, 96 countries and territories appeared Covid-19, recorded more than 100,000 cases, more than 3,400 deaths and nearly 56,000 people recovered. The United States recorded 233 positive cases with nCoV and 12 deaths, mostly in Washington state.