Translation of "Vaccinated" in Korean

Who are challenged with the virus after they are vaccinated,

동물에 백신을 주사한 뒤에 바이러스에 감염시키는 것이죠.

So if nobody is vaccinated and there was one measles case,

즉, 한 명의 홍역환자가 있고 아무도 백신을 접종하지 않았다면,