This is the 12585th most frequent Korean word.
대상포진
Shingles.
In this sentence, '대상포진' refers to shingles, a medical condition, as the subject of the sentence.
대상포진은 보통 면역력이 약해졌을 때 발생합니다.
Shingles usually occur when the immune system is weakened.
Here, '대상포진' is used to specify the disease against which vaccination serves as prevention.
대상포진 예방 백신을 맞는 것이 중요합니다.
It is important to get vaccinated against shingles.
In this context, '대상포진' indicates the disease contracted by the subject, explaining the reason for their action.