The federal government has taken clear steps toward a new phase of the Covid-19 pandemic in recent weeks: The Biden administration released the National Covid-19 Preparedness Plan, and new guidelines from the US Centers for Disease Control and Prevention dropped masking recommendations for most of the country.
원문출처 : https://www.cnn.com/2022/03/10/health/wastewater-data-masking-guidance/index.html
원문출처 : https://www.cnn.com/2022/03/10/health/wastewater-data-masking-guidance/index.html