What we should aim for is a society with zero COVID.

In the with-corona era, a new lifestyle is necessary.

He showed a change of technique in sumo.

He is a 'big friend', an adult fan of that anime.

His words had a great influence.

That decision had a bad effect on our project.

He is an expert in virology.

My computer got infected with a computer virus.

The Ebola virus is a very infectious virus.

The poliovirus is a virus that primarily enters the body through the mouth and destroys the nervous system.