According to US media reports, American epidemiologists predicted on April 30 that the COVID-19 pneumonia epidemic may continue to spread in the United States for at least 18 months to 2 years until 60%-70% of the population is infected. According to CNN, Mike, 미네소타 대학교의 전염병 연구 및 정책 센터 책임자, 말했다: “이것 …