If I understand this correctly this sounds like the virus has become less dangerous but hangs around longer, think an American study found cases of that too. As if it finds a way of protecting itself by not killing it’s hosts.
“experts in China say the Covid-19 patients they are seeing in the north-east of the country show “different symptoms" and require “longer incubation” than those in the central city of Wuhan at the beginning of the country's outbreak. Qiu Haibo, one of the country’s top critical care doctors in the National Health Commission’s top medical team, spoke on the national CCTV-13 news channel about the fresh observations his team were making. Dr Qiu said his team were seeing new cases in north-eastern Heilongjiang and Jilin provinces had a longer incubation period, and their clinical symptoms were not typical.
They don’t have a fever, he said, but are suffering from either fatigue or a sore throat. Some have no symptoms at all. He added that the new cases appeared to be carrying the virus for much longer.
According to the national Global Times newspaper, “tests on Wuhan patients normally came back negative within a week or at most two weeks” after a patient shows symptoms.
But now, even though the cases are more curable,
people appear to be carrying the virus for “longer periods”.
According to the official Xinhua news agency, 25 people are currently receiving treatment in hospital in north-eastern Jilin.
Heilongjiang province discharged its last patient on Saturday.