“Class B Policy (Class B infectious diseases shall be managed and controlled subject to Class B Management Measures)” was implemented for COVID-19 infection from January 8 according to the latest requirements of the national, provincial and municipal epidemic prevention and control work. At present, all normalized nucleic acid sampling points have been shut down in 9 counties (cities, districts) and Taizhou Bay New Area in Taizhou City, and only a batch of self-funded single-tube nucleic acid sampling points have been reserved in all places to serve the citizens in need.