This is the 7326th most frequent Korean word.
질병관리청에
"질병관리청에" means "to/in the Korea Disease Control and Prevention Agency."
The word is used to indicate the destination or subject of the inquiry.
질병관리청에 문의를 했습니다.
I inquired at the Disease Control Agency.
The word is used as the source of information.
질병관리청에 따르면, 예방접종이 중요합니다.
According to the Disease Control Agency, vaccinations are important.
The word is used to indicate from where the materials are requested.