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I read somewhere that the Chinese were doing multiple tests on people. I don't know if test failures are independent?

Yes its about telling people it reduces risk rather than removes it.

Discussions on twitter

The other side of mask wearing could be peoples perception of risk. If people feel safe in a mask then they may not keep a safe distance away. I noticed this when shopping last week in that some of those wearing masks failed to keep their distance.

I thought even quite a poor mask would reduce the chance of getting it. Even if it only reduces it by say 10% that still helps flatten the infection curve and reduce R0. Coupled with the stopping the wearer spreading an infection this could lead to a noticeable reduction in R0.

It always seemed naive to think that someone could just come in and manufacture thousands of ventilators. Even with a design already done or being adapted it will take a while to get a production line up and running and to get quality up. The next issue seems to be a lack of oxygen.

I think this tweet is relevant as well. It puts numbers to different approaches

I think it is the test and trace that really stopped the spread in China. Lipkin talked about shutting down areas (lockdown) as reducing the R0 to 1.4 in China and the test, trace and isolate as reducing it to 0.8. I think there is a suggestion that masks can help reduce spread (even if they...

Not really cov-19 related but hackers are trying to take advantage with various malware attacks. So be careful online. https://thehackernews.com/2020/03/covid-19-coronavirus-hacker-malware.html

Here is what looks like it might be a good article on why we should wear masks. (Not read it)

Is she the same person who was saying we don't need to follow the WHO advice because we have an advanced public health care system? Saying "the clue for the who is in its title it is a world health organization and it is addressing all countries across the world with entirely different health...

There is a problem with the shortage of masks. But government called for companies to design and start making ventilators. They could have done the same for masks (and goggles). That may have been an easier thing to get into production early.

The use of masks was one of the points that Lipkin emphasised although he was concerned about the shortage. I think on of the main points was the use helps reduce the chance that someone with the virus spreading as well as preventing people getting it.

Interesting podcast. Although I'm not very far through yet, Lipkin says he thinks it is the most transmittable virus we have ever seen. He also commented that its not person to person transmission but person to commonly touched thing to person which is different. He talks about in China...

Isn't some of it about risk and the likelihood of getting it in a particular way. For example, even if handwashing doesn't completely remove the risk it would significantly reduce it. Equally I think the 2m and 15 mins is about there being a high risk with risk being reduced as time is shorter.

There is a Q&A from the Bateman center on Covid-19 and ME http://batemanhornecenter.org/wp-content/uploads/2020/03/COVID-19-FAQ-Public.pdf Also a collection of useful resources https://batemanhornecenter.org/covid19/

I believe air quality is poor in northern Italy as well. Smoking rates are higher in Italy. Its probably also worth looking at mortality rates rather than numbers of deaths. The number of people identified with Cov19 will indicate spread rates. There was also a paper looking at age ranges...

I wondered if there was some factor of family size or to be more accurate the number of people (and age range) living in a house where I think keeping distance and avoiding spread would be very hard. I get the impression in the UK we have low numbers in each house but don't know any real stats,

It could be due to the way the spread is happening and the demographics. Italy has an older population than the UK so this may have a big impact. I also wonder if in the UK older people were finding it easier to isolate and its often younger people going to the events and traveling on buses etc.

An article about measures in hongkong and Singapore posted earlier talked about their approach of looking for contacts for 15 mins for people to quarantine (if contact less than 6 feet). But on the shorter times they said...