7月28日(周四)美股盘初,美国抗疫概念股走低,诺瓦瓦克斯医药(NVAX.US)跌超7%,Ocugen(OCGN.US)跌超4%,辉瑞<\/a><\/span><\/span>(PFE.US)跌近4%,Moderna(MRNA.US)跌3%、默沙东<\/a><\/span><\/span>(MRK.US)跌超3%。<\/p>\t\t\t\t\n