Great article.
“All of the tables have been sanitised, although the chance of catching Covid-19 from surfaces remains very low. The pub is table service only, and nobody can sit at the bar. He sits down and takes off his mask. Every five seconds he exhales.”
“All of the tables have been sanitised, although the chance of catching Covid-19 from surfaces remains very low. The pub is table service only, and nobody can sit at the bar. He sits down and takes off his mask. Every five seconds he exhales.”
https://twitter.com/orla_hegarty/status/1439517391633977347
“Each breath contains roughly 800 millilitres of air and 1,000 copies of the virus.
An hour later he has exhaled 720,000 copies of the virus.
“The pub, which measures 10m x 10m x 3m, contains 300 cubic metres of air.”
An hour later he has exhaled 720,000 copies of the virus.
“The pub, which measures 10m x 10m x 3m, contains 300 cubic metres of air.”
“With no windows open and no ventilation, the virus gradually fills the room. Within an hour, each cubic metre contains roughly 2,400 copies of the virus.
As the evening progresses, the number of punters grows. There are now 46 people in the pub:
As the evening progresses, the number of punters grows. There are now 46 people in the pub:
“40 customers and six members of staff. Two thirds have high levels of immunity, either from being vaccinated or having caught Covid-19 in the past.
After an hour, let's assume 17 people have caught the virus.
After an hour, let's assume 17 people have caught the virus.
“Of the two people sitting at the same table, one is vaccinated and does not become infected, but the other receives the highest viral load and is the first to become infected.
The hospitality trade knows there are many ways of making indoor dining and drinking safer
The hospitality trade knows there are many ways of making indoor dining and drinking safer
“If one large window is opened, depending on wind speed and temperature inside and outside the pub, the air in the room is replaced three times an hour. After 60 minutes 14 people are infected, compared to 17 when all windows are closed. Those sitting next to the windows are safe
“If two windows are opened on opposite sides of the room, allowing a light breeze to flow through, the air is replaced 15 times an hour. Only six people are infected. Studies show that only one case of Covid-19 in every 1,000 is contracted outdoors.
“If the infected man sits outside, nobody is infected.”
But, of course, he does not know he is infected….and nor do those who catch it when there..and off they all go on public transport, to shared homes, offices, clubs, bars, weddings and funerals.
But, of course, he does not know he is infected….and nor do those who catch it when there..and off they all go on public transport, to shared homes, offices, clubs, bars, weddings and funerals.
The cold season is coming up. Open windows and doors become less appealing.
But there are technological solutions such as heat recover ventilation, extracting used air and sending back fresh air via a heat exchanger, warming it up it the process.
But there are technological solutions such as heat recover ventilation, extracting used air and sending back fresh air via a heat exchanger, warming it up it the process.
Having high standards for ventilation would also improve conditions to prevent other airborne diseases and reduce damp and mould.
We know overcrowding and deprivation have led to markedly worse outcomes for people working and living in such spaces.
We know overcrowding and deprivation have led to markedly worse outcomes for people working and living in such spaces.
hearty says that in some institutional housing the R rate has been 10-15!
One person leading to 10-15 more infections.
One person leading to 10-15 more infections.
If they wanted a 3 word slogan then it would have been far better for it to have been
Ventilate! Ventilate! Ventilate!
Instead we see MPs crowding into the House of Commons with most on the Conservative benches unmasked. And the Speakers
One present had Covid last week
Ventilate! Ventilate! Ventilate!
Instead we see MPs crowding into the House of Commons with most on the Conservative benches unmasked. And the Speakers
One present had Covid last week
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