※ 引述《hihimen (aa)》之铭言：
: 今天看了一堆时粉、菸粉一直在推"14天后无感染问题"
: 那问题来了，一直没本土案例
: 入境台湾也要隔离14天，照时粉的说法，隔离完就安全了呀~
: 台湾为何还要全民戴口罩，是在戴心酸的吗?
: 这样好啦，不如全球隔离14天，肺炎病毒自然就消失了
: 泥说好扑好呀??
网络上有找到一篇WHO发布的隔离措施
https://reurl.cc/odLaz3
如有翻错或误解再麻烦指正
Criteria for discharging patients from isolation (i.e., discontinuing
transmission-based precautions) without requiring retesting[1]:
排除隔离病人的条件
For symptomatic patients: 10 days after symptom onset, plus at least 3
additional days without symptoms (including without fever [2] and without
respiratory symptoms)[3]
有症状的案例: 发病后10天，至少3天无症状后可以解除隔离
(包含发烧及呼吸道症状)
For asymptomatic cases[4]: 10 days after positive test for SARS-CoV-2
无症状的案例: 阳性检测10天后可解除隔离
里面的部份结论
Based on evidence showing the rarity of virus that can be cultured in
respiratory samples after 9 days after symptom onset, especially in patients
with mild disease, usually accompanied by rising levels of neutralizing
antibodies and a resolution of symptoms, it appears safe to release patients
from isolation based on clinical criteria that require a minimum time in
isolation of 13 days, rather than strictly on repeated PCR results. It is
important to note that the clinical criteria require that patients’ symptoms
have been resolved for at least three days before release from isolation,
with a minimum time in isolation of 13 days since symptom onset.
基本上大意是病毒在发病后9天就不容易再培养，尤其是症状较轻的病人
所以基于临床研究最少隔离13天后是安全的，不需要反复做PCR检测
个人认为台湾防疫跟检疫上也是依据目前病毒研究结果做决策
台湾社区可能有无症状感染者，虽传染风险低，但怎么追踪的确是个问题
目前这种隔离措施是在平衡感染风险跟医疗资源
再加上现在一直都有开放边境给国外的商务人事跟本国人入境
所以口罩还是能戴就戴着，也不晓得哪里会不会有防疫破口
万一中间有哪个带病的居家检疫者在传染期乱跑就容易扩散