ワクチンを接種していない人に比べて、より短い時間でウイルスを拡散する可能性がある。 cdc.gov/mmwr/volumes/7…
Weekly / August 6, 2021 / 70(31);1059-1062
Massachusetts residents who had traveled to the town during July 3–17; 346 (74%) occurred in fully vaccinated persons.
Testing identified the Delta variant in 90% of specimens from 133 patients. Cycle threshold values were similar among specimens from patients who were fully vaccinated and those who were not.
Li B, Deng A, Li K, et al. Viral Infection and Transmission in a Large Well-Traced Outbreak Caused by the Delta SARS-CoV-2 Variant. medRxiv. 2021 Jul 12; doi.org/10.1101/2021.0…
Mlcochova P, et al. SARS-CoV-2 B.1.617.2 Delta Variant Emergence and Vaccine Breakthrough. Research Square Platform LLC. 2021 Jun 22; researchsquare.com/article/rs-637…
SARS-CoV-2のB.1.617.2デルタ変異株は、2020年末にマハラシュトラ州で初めて確認され、B.1.1.7アルファ変異株やその他の既存の
In vitroにおいて、デルタ変異株は、D614Gを持つ野生型のWuhan-1と比較して、ワクチン誘発抗体に対する感度が約8倍低下していた。SARS-CoV-2 デルタ変異株に対する血清中和力は、BNT162b2と比較してChadOx-1を接種した参加者で有意に低かった(GMT 3372対654、p<0001)。
Ong SWX, et al. Clinical and Virological Features of SARS-CoV-2 Variants of Concern: A Retrospective Cohort Study Comparing B.1.1.7 (Alpha), B.1.315 (Beta), and B.1.617.2 (Delta). SSRN Journal. 2021 Jun 7; dx.doi.org/10.2139/ssrn.3…
背景 SARS-CoV-2のVOC(variant of concern)が病気の
Riemersma KA, et al. Vaccinated and Unvaccinated Individuals Have Similar Viral Loads in Communities with a High Prevalence of the SARS-CoV-2 Delta Variant. medRxiv. 2021 Jul 31; doi.org/10.1101/2021.0…
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Sheikh A, et al. SARS-CoV-2 Delta VOC in Scotland: demographics, risk of hospital admission, and vaccine effectiveness. The Lancet. 2021;397(10293):2461-2462. doi.org/10.1016/S0140-…
スコットランドにおけるデルタVOCは、主に若くて裕福なグループに見られることがわかった。
cdc.gov/coronavirus/20…
The principal mode by which people are infected with SARS-CoV-2 is through exposure to respiratory fluids carrying infectious virus. Exposure occurs in three principal ways: (1) inhalation of very fine respiratory droplets and aerosol particles
Breakthrough infection with SARS-CoV-2 and its predictors among healthcare workers in a medical college and hospital complex in Delhi, India medrxiv.org/content/10.110…
平均(SD)年齢29.1(9.9)歳の325名のHCWが登録され、そのうち211名(64.9%)が男性。2.79人(85.8%)のHCWが完全に