美国第三轮新冠疫情高峰，中小城镇成为主战场

美国上周五新冠新确诊8.5万例，创出新历史记录（周末休息，诊断数会周期性大幅下滑）。第三轮疫情高峰星火燎原，从大都市逐步向小城镇蔓延。累计确诊873万例、死亡22.8万例。Cases of the virus are nowrising, hitting broader swaths of the country and remote places it had not yet reached.Deaths, meanwhile, have declined since the earlyweeks of the pandemic, but remained largely lat in recentweeks ………………………………