マスク着用強制したら感染が減少した、と。

 

マスク着用自体は微妙に伝搬リスクを下げるのだが
・食事等最も感染リスクの高い瞬間に限って外してる
・着用でアリバイが作られ他のずっと予防効果の高い行為がないがしろにされる
ことで無効果ないし負の効果あり。着用率が高い日本で現在感染拡大中であることが物語る。https://t.co/izTqjqQv0Q

— Spica (@Kelangdbn) August 9, 2020

The results are in: counties with mask mandates reduced coronavirus case numbers for the entire state.https://t.co/AIeiLUqpTr

— Changing America (@ChangingAmerica) August 10, 2020

Story at a glance

Researchers and public health experts have demonstrated that wearing face masks decreases the spread of the coronavirus.

While some localities and states have mandated masks in public, others have resisted.

In several counties in Kansas and other states where masks are mandated, new coronavirus cases have decreased.

“Some counties have been the control group with no mask and some counties have been the experimental group where masks are worn, and the experimental group is winning the battle. All of the improvement in the case development comes from those counties wearing masks,” Norman told the Kansas City Star. 

The data in Kansas is supported by research that shows the risk of coronavirus infection can be reduced by 65 percent for the person wearing the mask

マスク着用強制した地域の感染は減少。