Given the shortage of protective equipment, is there sufficient evidence of immunity after infection so that doctors who have passed the disease even in a mild condition, do not need to use PPE because they are less exposed to contagion? / 我的疑问是，在眼下防护资源紧缺的情况下，有 没有足够的证据显示已经历过新冠病毒痊愈的医护人员(哪怕临床症状轻微)因为具备免疫力而无需进行个人防护措施，因为我们并不易再被感 染。