The state has already spent $1 billion trying to stymie the outbreak and estimates that business closures will cost roughly $10 billion to $15 billion in lost revenue.
"Be in no doubt that I can continue ... to communicate with all my top team, to lead the national fight back against coronavirus," Johnson said in a video posted to social media.
The coronavirus death toll has surpassed 8,000 in Italy, erasing some of the hope seen earlier this week when the number of reported deaths seemed to have slowed down.
New York Gov. Andrew Cuomo is holding a press conference on the COVID-19 outbreak, which has infected more than 30,800 people in the state as of Wednesday.
New York Gov. Andrew Cuomo is holding a press conference on the COVID-19 outbreak, which has infected more than 25,665 people in the state as of Tuesday.
Pressure is building up in Europe to come up with new ways to mitigate the economic impact of the coronavirus, in the region that has become the epicenter of the outbreak.
Business morale in Germany logged its steepest fall in March since the country's reunification in 1990, the Ifo Institute for Economic Research said Wednesday.
The daily death toll from the coronavirus has increased once again in Italy, after two days of smaller rises, suggesting the worst may not yet be over for the embattled country.
The U.K. government has appealed for 250,000 "people in good health" to help its NHS cope with the coronavirus outbreak, as final year medical students and student nurses were told they would be moved to the "front line."
New York Gov. Andrew Cuomo plans to hold a press conference on the COVID-19 outbreak, which has infected more than 20,800 people in the state as of Monday.
Euro zone finance ministers are not expected to agree on additional funding to mitigate the economic impact of the coronavirus when they meet Tuesday evening, two sources told CNBC.
European countries are under growing pressure to take an unprecedented move and issue a new kind of debt to tackle the economic impact of the coronavirus.
Get complete CNBC business news coverage online. Find the latest business news pertaining to Europe. Sector watch news, headlines; top stories is available on the official CNBC Europe site.