The Chinese authorities resorted to increasingly extreme measures in Wuhan on Thursday to try to halt the spread of the deadly coronavirus, ordering house-to-house searches, rounding up the sick and warehousing them in enormous quarantine centers.

The urgent, seemingly improvised steps come amid a worsening humanitarian crisis in Wuhan, one exacerbated by tactics that have left this city of 11 million with a death rate from the coronavirus of 4.1 percent as of Thursday — staggeringly higher than the rest of the country’s rate of 0.17 percent.

With the sick being herded into makeshift quarantine camps, with minimal medical care, a growing sense of abandonment and fear has taken hold in Wuhan, fueling the sense that the city and surrounding province of Hubei are being sacrificed for the greater good of China…

The city and country face “wartime conditions,” Ms. Sun said. “There must be no deserters, or they will be nailed to the pillar of historical shame forever.”