He continued his journey to the west.

Nishi is my best friend.

I drew the west wind in mahjong.

The Nile is the longest river in Africa.

The effect of this medicine is to alleviate the symptoms of a cold.

I was bitten by a biting midge, and it's itchy.

In this area, you can see a lot of gaganbo (a type of large mosquito).

A cranefly is perched on the window.

In summer nights, mosquito repellent is necessary.

Zoonosis is a disease that spreads from animals to humans, or vice versa.