chuka_lis (chuka_lis) wrote,
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chuka_lis

Сниженные риски смерти

Согласно анализу данных (с декабря 2020 по апрель 2021го) английских ученых, прививка файзеровской вакциной снижает вероятность смертельно заболеть ковидом на 44% после 1 дозы, и на 69% спустя 1 неделю  и далее, после 2й.
Прививка астра-зенекой (1 доза)  снижает аналогичный риск на 56%.
Te sting and deaths data between 8th D ece mber (whe n the vac cina ti on p rogramme st art ed) an d 1 7th April we re initia lly e xtrac ted . T his wa s sub se qu ently res tric ted t o dea th s to Ap ril 6th a s lag s in de ath s regis tra ti on s could a f fect the mo st r ecen t d ays . Survi val analy si s wa s c onduc te d to e s ti mate t he ha zard ra tio s f or dea th w ithin 28 days o f a p o sitiv e SARS -C o V-2 PC R te st b y va cci nation sta tu s: u nvac cina te d, vac cin a ted wi th on e do s e (whe re th e fir st dos e wa s rec eiv ed a t lea st 21 days be fo r e the te st da te ), v acc inat ed w ith 2 do se s (whe re the se con d dos e wa s rec eiv ed a t lea st 7 days before
We al so e stimat ed e ffe ct s among th os e w ho rece ived fi rs t dos e s 0-20 day s pri or to t e sting p o sitiv e ( earlie r than an e ff ec t would be an tic ipat ed) a s a con trol analysis.
48,0 96 ca se s ag e d 70 year s and a bove w ere inc lud ed i n the a na lysi s, of whic h 79. 1 % we re unv acc inated; 1 2 .7% h ad been vac cina te d with BNT16 2b2 (3,910 rec eiv ed th eir fi rs t do se within 2 0 day s o f the i r te st dat e, 2,007 r ec eive d th eir fi rst do se >= 21 day s be fore thei r te st da te an d 19 1 rece ived th e ir 2nd d o se > =7 da y s be fore t heir t est da te ) ; and 8. 2% ha d b een v acc inated with ChAd Ox1 (2, 686 rec eived the ir firs t do se withi n 20 da ys o f thei r te st da te , 1,258 re ceiv ed th eir fi r st dos e >= 21 day s be fo re th e ir te st da te an d 6 rec eive d th eir 2nd do se > =7 days b ef o re the ir te s t da te) .
There wer e nota bl e di ff erenc e s b y ca re h ome re siden t sta tu s. Amo n g ca re home r esid ent s , hazar d ratio s wer e 0 .87 (95% C I 0.60 -1. 25 ) fo r 1 dos e of B NT162b 2 and 0 .37 (95% CI 0.23 - 0. 60) f or 1 do se o f ChAd Ox1 (num bers w er e too small for e s timating 2 do se e f fec ts wi th eith er vac cin e). Among no n-ca re home r e siden t s, haza rd ra tio s comp a re d to unvac ci nated c a se s w ere 0.48 (9 5 %CI 0. 38-0 .59) for 1 dose o f B NT1 62b2 an d 0.52 (9 5%C I 0. 3 7-0.73 ) fo r 1 dos e of ChAd Ox 1.
We estimated risk of death in vaccinated compared to unvaccinated COVID-19 cases. Cases vaccinated with 1 dose of BNT162b2 had 44% reduced risk of death, 55% with 1 dose of ChAdOx1, and 69% with 2 doses of BNT162b2.
Tags: вакцина, коронавирус, статьи
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