Public Health  COVID-19 Returns with a Vengeance Similar to its quasi-island province to the south, mainland China’s effort to control the impact of new coronavirus strains through isolation and lockdowns is now on the ropes. So far in March, the country has recorded 453,141 cases and 3,824 related deaths, both of which are records. With the seven-day average for fatalities at nearly 285/day, that rate has exceeded the previous peak of 184/day set in April 2020, when there were no vaccines and the disease was rapidly spreading throughout the world. The other crucial difference this time is that major coastal metropolises, such as Shenzhen, near Hong Kong, and Shanghai, have become the new epicenters.  Factories in the sou...