Por qué algunas personas contraen COVID y otras nunca se contagian

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[{"selector":"#anim-df8e8574-dd80-4315-9059-0df4c6e22b35","keyframes":{"opacity":[0,1]},"delay":400,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f1827d59-bc5d-4726-b1d8-5e2323e09021","keyframes":{"opacity":[0,1]},"delay":400,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] En la actualidad hay muchas personas que aún no han contraído COVID, pero ¿por qué? Expertos virólogos de una universidad en Reino Unido revelaron seis razones por las que alguien no se contagia de COVID-19.

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[{"selector":"#anim-e98e1fd5-22c7-4f04-91b7-d769116b18f3","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-59e3d7c5-6c62-423b-8b8d-139d37c955a1","keyframes":{"transform":["rotate(20deg) translate3d(0px, -80.42771%, 0) rotate(-20deg)","rotate(20deg) translate3d(0px, 0px, 0) rotate(-20deg)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-58ae0826-ff6e-42db-812a-f509e0c3a169","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-71359581-fae5-4931-a22f-05d7359a3498","keyframes":{"transform":["rotate(-119deg) translate3d(0px, -61.88097%, 0) rotate(119deg)","rotate(-119deg) translate3d(0px, 0px, 0) rotate(119deg)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-75fc98d9-04ea-4d45-a24a-05335f5b368a","keyframes":{"opacity":[0,1]},"delay":0,"duration":800,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-1ee4f9a6-27de-4d01-a033-d401b42b6047","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":800,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-9778ae85-a2f2-4128-a1de-60cd43e4121d","keyframes":{"opacity":[0,1]},"delay":400,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-485608bc-1bee-4a0d-974f-cdcb83cdbc7b","keyframes":{"opacity":[0,1]},"delay":400,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] 2. Infecciones previas “Es posible que una infección previa con ciertos virus del resfriado común pueda dejarle suficiente ‘memoria’ inmune para manejar mejor al COVID”, afirmó el profesor Stanton.

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