7487. fine aerosole

exhaled  breathingって、普通の息遣いってことでいいのかな? ゆっくり息をする・・・深呼吸?

  • コメントいただきました

exhaled breathは単に「吐いた息」(呼気)です。反対語はinhaled breath(吸気)。

ありがとうございます

Subjects were asked to breathe normally and to recite the alphabet once at 5,
15, and 25min.We collected “coarse” (>5 μm) aerosol droplets by impaction on
a Teflon surface and “fine” droplets (≤5 μm and >0.05 μm) by condensation
growth and impaction on a steel surface constantly rinsed into a buffer containing
(PBS with 0.1% BSA) liquid reservoir.

Little is known about the amount and infectiousness of influenza
virus shed into exhaled breath. This contributes to uncertainty
about the importance of airborne influenza transmission. We
screened 355 symptomatic volunteers with acute respiratory illness
and report 142 cases with confirmed influenza infection who provided
218 paired nasopharyngeal (NP) and 30-minute breath samples
(coarse >5-μm and fine ≤5-μm fractions) on days 1–3 after symptom
onset. We assessed viral RNA copy number for all samples and
cultured NP swabs and fine aerosols. We recovered infectious virus
from 52 (39%) of the fine aerosols and 150 (89%) of the NP swabs
with valid cultures. The geometric mean RNA copy numbers were
3.8 × 104/30-minutes fine-, 1.2 × 104/30-minutes coarse-aerosol
sample, and 8.2 × 108 per NP swab.

エアボーン感染を認めようよ・・・ね・・・

満員電車は苦行のように「黙って」マスクして乗るから、まだマシ。

楽しく会話しない修行のような「ひとり飯」ばかりなら

でも、居酒屋は勘弁ってところかな。

焼肉屋万歳ってことで。

(東南アジアは、屋台が食卓だから、それも流行が少ない理由かも。ちなみにイスラム圏は1日に五回のお祈りの前には、手洗い必須=足も洗う。モスクは土足禁止)