ワクチン接種しても陽性になることもあるから、接種後も警戒は必要だ、と。

 

A Covid-19 vaccine does not provide full or immediate protection, which means it's still possible to get infected and test positive for the virus https://t.co/w4xDcNLGeJ

— CNN (@CNN) February 2, 2021

The vaccine makers are still studying if the vaccines just keep people from getting really sick or if they totally protect from infection.

If you are asymptomatic you would still test positive for Covid-19. That would also mean even if you are vaccinated you could also still spread the disease. That's why even the vaccinated will still need to wear masks. A person could be an asymptomatic carrier and have the virus in their nasal passageways, so when they are breathing or speaking or sneezing they could still pass the novel coronavirus on to others.

ワクチンうっても陽性になる

１）ワクチン接種する前から感染していた

２）ファイザーでも一回目接種して２週間で５２％、２回め接種して９５％。完璧ではない

３） ワクチンで発症、重症化は防げても他人に感染させる可能性は皆無ではない。

したがって、マスク着用などの警戒はワクチン接種後も必要だ、と。