Illinois would have to double the number of available hospital beds in the next two weeks to treat COVID-19 patients if the coronavirus is not contained amid a pandemic that has claimed 16 lives in the state, Gov. J.B. Pritzker said Tuesday.

The state would need almost 38,000 additional hospital beds, including more than 9,000 in intensive-care units, by April 6, in a worst-case scenario, the Democrat said at his daily briefing. And nearly 5,000 ventilators would be in demand — more than double what’s available in the state.

But Pritzker said efforts to tame the potentially deadly virus, such as his order to close non-essential businesses and keep people from leaving their homes unnecessarily, should temper those numbers. Despite the fiscal hardships, he said he opposed President Donald Trump’s suggestion that such social-distancing practices be lifted soon to spare the U.S. economy.

The Illinois Department of Public Health announced 250 new cases of the respiratory ailment, a 19% jump from a day earlier, to a total of 1,535. Officials reported four additional deaths Tuesday.

Illinois can now process 600 tests daily in four state-run laboratories, up from 50 a day one month ago. Drive-thru, mobile and retail-store testing sites will produce hundreds more and commercial facilities are expanding capacity to 4,300 a day, Pritzker said.

But the rapidly spreading illness has outrun containment by testing alone, the governor said.

More than half of the state’s 28,600 hospital beds are occupied, officials said. About 30% of the 2,200 ventilators is in use.

In a worst-case scenario, public health officials said that by Monday, the state would need an additional 3,300 beds and 400 ventilators. Just a week after that, the need would grow to 37,600 additional beds, of which 9,400 would have to be ICU, and 4,700 ventilators.

The Illinois Emergency Management Agency has sent tents to hospitals to serve as triage centers at 66 of the state’s 200 hospitals for evaluating potential COVID-19 patients. Officials from IEMA, the National Guard and the U.S. Army Corp of Engineers are investigating closed hospitals that could be temporarily re-opened.