WEBVTT

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최근 홍역에 대해 이야기가 많습니다.

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홍역이 무슨 해를 끼치는걸까요?

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그리고 이에 맞서 백신을 맞을 필요가 있는걸까요?

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아니면 그냥 음모에 불과한 걸까요?

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홍역은 바이러스입니다

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절반은 단백질이고, RNA와 번식을 위한 단백질로 구성되어있죠

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스스로 번식을 할 수 없고, 하려면 숙주세포가 필요합니다

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홍역에 대해 알아보기 위해서는

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우리의 면역계에 대해 알아 둘 필요가 있습니다.

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이해를 돕기 위해 만든 이 그림을 이전에도 한번 본적이 있을지 모르겠네요

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이제 이중에 홍역에 관련된 부분에만 집중해보도록 하죠

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홍역 바이러스는 코, 입, 눈을 통해 체내로 들어오게됩니다

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홍역의 감염은 폐에서부터 시작됩니다

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홍역은 폐로 오는 침입자를 막아주는 일차방어선인

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대식세포를 감염시키는데 능합니다

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바이러스들은 그 안으로 들어가서 세포를 장악해버립니다

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바이러스는 세포를 조작해서

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위험한 바이러스 생산공장으로 바꿔버립니다

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그렇게 세포가 바이러스로 채워지면

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바이러스들은 망가진 세포를 빠져나가고

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다른 세포에 이런 과정을 반복합니다

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하지만 면역계에는 바이러스 감염에 대한 강력한 무기인

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자연살해세포가 있습니다

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이 세포들은 몸 속을 순찰하면서

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감염된 다른 세포가 있는지 확인합니다

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그렇게 감염된 세포를 찾게되면

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스스로 자살하도록 명령을 내립니다

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이 방법은 아주 효과적이어서

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감염 초기 10일동안은 홍역에 걸렸는지도 잘 모르게됩니다

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그리고 이제부터 홍역이 왜

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