In New York, the epicentre of the American outbreak, governor Andrew Cuomo and health officials warned that the crisis there is just a preview of what other U.S. cities and towns will soon face.
Catalan business group Foment del Treball called for further measures to cushion the blow from the enforced shutdown and said the state should cover 75% of labour costs incurred during the period by companies with limited access to funds.
The country, which has the world's second deadliest outbreak after Italy, recorded 838 deaths from the pandemic on Sunday, its third straight daily record for coronavirus deaths.
Crews of workers and soldiers were frantically building more field hospitals in the capital and surrounding towns.
Nearly 15% of all those infected in Spain, almost 13,000 people, are health care workers.
The number of new cases increased by 9,222 on Tuesday - the most in a single day - to bring the total number of confirmed infections in the country to 94,417.
"Reducing the pressure on the ICUs will be important for considering de-escalation measures", said Sierra, who took over Monday as the health emergency center's spokesperson after its director tested positive.
"It is our fervent hope that that is the case", he said.
"We have always maintained that the aim was to try to balance fighting against the virus's propagation with upholding the basis of our economic system", Transport Minister Jose Luis Abalos said on national television.
For most people, the coronavirus causes mild or moderate symptoms, such as fever and cough.
Moscow, meanwhile, locked down its 12 million people as Russian Federation braced for sweeping nationwide restrictions.
"We have managed to win time and slow down an explosive spread of the disease in the previous weeks, and we need to use that time reserve to the full", Putin said.
Putin has declared that only people employed by essential sectors should work this week, leaving it to regional authorities to spell out the details.
"The extremely negative turn of events we are seeing in the largest European and USA cities causes extreme concern about the life and health of our citizens", Moscow Mayor Sergei Sobyanin said.
Meanwhile, Israeli Prime Minister Benjamin Netanyahu is in isolation, after a parliamentary aide tested positive for coronavirus.
Spain on Monday became the third-most coronavirus infected country in the world, surpassing the number of cases in China, where the novel virus originated late a year ago.
The spike in deaths in NY was another sign of the long fight ahead against the global pandemic, which was filling Spain's intensive care beds and shutting millions of Americans inside even as the crisis in China, where the outbreak began in December, kept easing.
Japanese automaker Toyota Motor Corp. halted production at its auto plants in Europe at least until April 20.