一方、終始無症状の場合はウイルス量が少なく感染力も弱い
　[HCoV(旧型コロナ)]
https://wellcomeopenresearch.s3.amazonaws.com/manuscripts/18181/b681c78f-fcef-49c1-bda1-ab00acf4dca6_figure2.gif
https://wellcomeopenresearch.org/articles/6-27
>Despite asymptomatic infections being predominant (>70% of episodes)
>the above findings suggest they were less likely
>to transmit infection compared to symptomatic individuals.
　[新コロ]
https://journals.plos.org/plosone/article/figure?id=10.1371/journal.pone.0270694.t003
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0270694
>our data support the theory that asymptomatic patients
>are generally less infectious than symptomatic patients.