The infectious capacity of this virus is very high.

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.

Norovirus can be prevented by hand washing and disinfection.

My computer got infected with a computer virus.

He is an expert in virology.

Please use the emergency stairs in case of a fire.

Due to the earthquake, the city declared a state of emergency.

A ping-pong infection occurred at school, causing many students to take time off.

Oral infection is when pathogens enter the body through food or drink.