COVID-19は発症2-3日前から直後が感染力のPeak https://t.co/qXLEd6sUM4
— say_huitaine (@say_huitaine) April 17, 2020
from Twitter https://twitter.com/say_huitaine
COVID-19は発症2-3日前から直後が感染力のPeak https://t.co/qXLEd6sUM4
— say_huitaine (@say_huitaine) April 17, 2020
from Twitter https://twitter.com/say_huitaine