Please wait until your turn.

This rule should be something known to everyone.

The teacher gave me a book.

The teacher gave me some advice.

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.

Prevention of infectious diseases is important with hand washing and wearing masks.

Please refrain from going out because community-acquired infections are spreading rapidly.

It is important to identify the source of infection.

The infectious capacity of this virus is very strong.