The World Health Organization (WHO), a United Nations agency responsible for international public health, including disease control and health guidelines.
世界保健機関は新しいガイドラインを発表した。
The World Health Organization issued new guidelines.
世界保健機関（WHO）の勧告に従ってワクチン接種を受けた。
I followed the WHO's recommendations and got vaccinated.
パンデミックのとき、世界保健機関の発表は各国の対応に大きな影響を与える。
During a pandemic, announcements from the WHO greatly influence how countries respond.