コロナ関係リンク

https://news.yahoo.co.jp/articles/e11b631b73cb63ea410607dab2f0a2fcded1f90c?page=1

https://gendai.ismedia.jp/articles/-/75285

https://mag2.com/p/money/968709

https://diamond.jp/articles/-/248087

https://toyokeizai.net/articles/-/367734

https://toyokeizai.net/articles/-/349635

https://toyokeizai.net/articles/-/393680

https://www.yushoukai.org/blog/pcr

http://tanakanews.com/210106corona.htm