Por que algumas pessoas não pegam Covid?

Por que algumas pessoas não pegam Covid? Novo estudo pode ter a resposta

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[{"selector":"#anim-4435d6f0-5629-40fb-bbf0-6181875df8af","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7c4fac25-322c-4e79-8b1e-c48bbc4b8a23","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-ab43d216-74ac-4614-9428-6d3ab035e5e5","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-09f12842-433b-4ecc-9b57-b0e522e56d29","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Um novo estudo descobriu que algumas pessoas não são infectadas pelo vírus da Covid-19 por possuírem respostas imunitárias únicas que ajudam a evitar uma infecção sustentada Pexels/Anna Shvets

[{"selector":"#anim-cc5a45a5-5200-4a36-8fd8-2eb8596197c2","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-aad6752f-ba29-4ea3-9f16-04be4ed6254a","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-bda2f8a0-e737-4c4e-a378-1a4157c41c62","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-89ff115f-a23d-44d5-bd4a-4b3cd529ffd8","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Para realizar o estudo, os pesquisadores aplicaram o vírus Sars-CoV-2 pelo nariz de 36 voluntários adultos saudáveis sem histórico prévio de Covid-19 Pexels/Angela Roma

[{"selector":"#anim-2be4a830-abfa-4fe4-b09a-4128196c57c1","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ad70a662-04c2-4407-8457-37d73896753a","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-27da1d5b-2eb6-45de-bece-40ee338ffc8c","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-5e1605a5-2941-4916-aeba-c6b115cf0faf","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Eles realizaram o monitoramento detalhado do sangue e do revestimento do nariz dos participantes, rastreando a infecção e a atividade das células imunológicas; dos 36 voluntários, seis desenvolveram a infecção Pexels/Polina Tankilevitch

[{"selector":"#anim-0212d2fe-10d5-49fc-b0b1-3d3168cdd176","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4b5cfef2-4702-4067-82f6-6b4fc0903e71","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-6d7b5e0f-c7ee-428c-bb27-0bba2515aeaa","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-56f59a21-525b-41de-ada5-94e57ade44ed","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Os pesquisadores descobriram que as pessoas que não desenvolveram Covid-19 apresentavam respostas imunológicas que lhes permitiam resistir a infecções e doenças virais sustentadas Pexels/Artem Podrez

[{"selector":"#anim-bf2c1217-6c2c-4607-b040-2489967c713e","keyframes":{"opacity":[0,1]},"delay":0,"duration":1500,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6f76ac4b-6100-4157-a9d2-14aa8ef096a1","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-e2f7af65-aeff-41aa-b5c2-29f64e8d7eca","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-6ffc5498-bec5-4c23-9754-2215fbca262b","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Além disso, a partir do estudo, os pesquisadores obtiveram um retrato detalhado dos tipos de células envolvidas nessa proteção Pexels/CDC

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