B형·C형 간염, 쯔쯔가무시증 등 격리는 필요하지만 발생상황을 계속 감시할 필요가 있어 24시간 내 신고하도록 하는 26종은 3급 감염병에 포함됐다.
Although quarantine is necessary, such as hepatitis B and C and tsutsugamushi, the outbreak needs to be monitored continuously, so 26 species that are required to be reported within 24 hours were included in the 3rd class infectious disease.