The age-adjusted attributable rate of illness if infected was 23 illnesses per 100 person-seasons (13–34), suggesting most influenza infections are asymptomatic.
0002名無しのアビガン(東京都)(ワッチョイ 7f58-zL94)2021/05/06(木) 03:19:08.16ID:lulJOax30 The LANCET Comparative community burden and severity of seasonal and pandemic influenza: results of the Flu Watch cohort study 抜粋
Findings Based on four-fold titre rises in strain-specific serology, on average influenza infected 18% (95% CI 16–22) of unvaccinated people each winter. Of those infected there were 69 respiratory illnesses per 100 person-influenza-seasons compared with 44 per 100 in those not infected with influenza. The age-adjusted attributable rate of illness if infected was 23 illnesses per 100 person-seasons (13–34), suggesting most influenza infections are asymptomatic. 25% (18–35) of all people with serologically confirmed infections had PCR-confirmed disease. 17% (10–26) of people with PCR-confirmed influenza had medically attended illness. These figures did not differ significantly when comparing pandemic with seasonal influenza. Of PCR-confirmed cases, people infected with the 2009 pandemic strain had markedly less severe symptoms than those infected with seasonal H3N2. 0003名無しのアビガン(東京都)(ワッチョイW e7b9-W7Og)2021/05/06(木) 06:16:28.08ID:Xpuj+6Sa0 HCoVも同様 https://wellcomeopenresearch.org/articles/6-27 >asymptomatic infections being predominant (>70% of episodes) 0004名無しのアビガン(東京都)(ワッチョイ 7f58-zL94)2021/05/06(木) 10:47:41.57ID:lulJOax30>>3 サンクス! endemic human coronaviruses(例年私たちがひいていた従来の風邪)も7割以上は無症状感染者(厳密にはウイルスを保有した無症状者)なのね! less likely to transmit infection(しかも無症状感染者は他人へはほとんど風邪を移さない) 0005名無しのアビガン(東京都)(ワッチョイ 7f58-zL94)2021/05/06(木) 10:57:17.13ID:lulJOax30 インフルや風邪と違ってcovid-19は無症状で感染するから恐怖、なんて言ってる人たちをなんとかしたい。本当のことを知らない(メディアがフェイクニュースを流す)からみんな自粛やオールマスクなんてしてるんだろ。 従来の風邪もインフルも無症状感染する。で例年そんなときに年がら年中自粛やオールマスクなんてしていたのか?、て疑問を投げかけたいよ。 0006名無しのアビガン(光)(アウアウウー Saab-ywup)2021/05/06(木) 14:14:36.18ID:shh1kOYta 症状出たらひたすら苦しい思いするから、それが嫌でマスクしたり手洗い消毒してるだけだ
*4 Complete Genomic Sequence of Human Coronavirus OC43: Molecular Clock Analysis Suggests a Relatively Recent Zoonotic Coronavirus Transmission Event https://jvi.asm.org/content/79/3/1595 >The dating of the most recent common ancestor of BCoV and >HCoV-OC43 to around 1890 is one argument. Another argument is >the fact that central nervous system symptoms were more pronounced >during the 1889-1890 epidemic than in other influenza outbreaks. >It has been shown that HCoV-OC43 has neurotropism and can be neuroinvasive (4).
*2 Airborne transmission of SARS-CoV-2 https://science.sciencemag.org/content/370/6514/303.2 >one is far more likely to inhale aerosols than be sprayed by a droplet (7), >and so the balance of attention must be shifted to protecting against airborne transmission.
>we urge public health officials to add clear guidance about the importance of >moving activities outdoors, improving indoor air using ventilation and filtration
*2 Aerosol and Surface Stability of SARS-CoV-2 as Compared with SARS-CoV-1 https://www.nejm.org/doi/full/10.1056/nejmc2004973 >SARS-CoV-2 remained viable in aerosols throughout the duration of our experiment (3 hours)
*3 Stability of SARS-CoV-2 on critical personal protective equipment https://www.nature.com/articles/s41598-020-80098-3 >significant quantities of viable SARS-CoV-2 could be recovered from inoculated N-95 and N-100 masks at 14 days. 0014名無しのアビガン(山梨県)(ワッチョイW 6a0b-zlN3)2021/05/09(日) 03:32:22.29ID:vWqK7gBe0>>12 キャッチしてる分があるからには、漏れ出る分が100%以上になることはないからマスクのウィルス削減効果は発揮されてるな。
それとも何かね。マスクが罹患してそこからウィルスが増えるとでも? 0015名無しのアビガン(東京都)(ワッチョイW cdb9-0KWs)2021/05/16(日) 21:21:21.48ID:DSXjB8a90 Predicting airborne coronavirus inactivation by far-UVC in populated rooms using a high-fidelity coupled radiation-CFD model https://www.nature.com/articles/s41598-020-76597-y ・ UVC照射した場合の感染者の1m以内の空間のSARS-CoV-2濃度は 照射しない場合の1m以上離れた空間の濃度より低水準