Day 160 – (even) More on Masks

It takes quite a lot for me to read a Physics paper. Of the the three, traditional “main” branches of science, Physics was my least favourite. And that’s saying something, given that one of the others is Chemistry.

However, this paper by Verma et al. in the journal Physics of Fluids (please try to restrain your excitement, readers) is actually rather interesting and offers further evidence that masks with exhalation valves are frankly useless in the fight against Covid-19. It also adds that those plastic face shields people are starting to use are equally kak. (In addition, they are not “cloth covering the nose and mouth”, so technically not legal either. Not that that will bother anyone in SA.)

Thus:

…there is an increasing trend of people substituting regular cloth or surgical masks with clear plastic face shields and with masks equipped with exhalation valves. One of the factors driving this increased adoption is improved comfort compared to regular masks. However, there is a possibility that widespread public use of these alternatives to regular masks could have an adverse effect on mitigation efforts.

Just for the record: “improved comfort compared to regular masks” just means “people being overly dramatic about having to wear a mask”. Having “an adverse effect on mitigation efforts” is merely fancy language for “won’t work at stopping the transmission of Covid-19”.

It’s been said before.

And there are some more of those lovely visualisations of coughs and sneezes, which I screenshotted.
For the clear plastic face shield:

And for the mask with exhalation valves:

Full descriptions and even some delightful (and educational) videos on that link through to the paper, but basically (as you may have already guessed), green cloud is not good. And there’s a lot of green cloud in those images.

So. If you are one of those people who wears one of these masks or face shields or you know someone who does, please (politely) let them know that they’re not helping the situation at all.

Day 151 – I’m not saying don’t do it, but …

…this microbiologist is staying away for just a little while longer.

Level 2 lockdown, arriving last Tuesday, means more of the economy can open up again. Balancing viral infection versus economy, the scale and effect of each, and retrospectively examining what should have been done has become a divisive, bitter and typically polarised debate, and is for another post, another time and – quite possibly – another person.

So that’s really not what this is about.

Gym is what this is about.

Gym is somewhere that I used to go several times a week BTV and is something that I generally enjoyed. A quick cycle here, a quick sprint there and some lifting of generally rather heavy things meant that my gains were lekker, boet* and my body was literally flooded with several (or more) endorphins, which was very nice.

My gym reopened this week, but I’m not going back.

In my considered (some might even say “professional”, but let’s not push things unnecessarily) opinion, gym is not a safe place to be right now.

There are two reasons for this.

The first one is a South African reason: the government’s hand has been forced on relaxing the lockdown. We simply do not have a strong enough economy to continue limiting business and “normal life” anymore.  SA’s infections have spread in different places at different times, prolonging lockdown: we were almost through the storm here in the Western Cape, while it was only just beginning elsewhere. And while a lot of the graphs and statistics show that we are probably past the worst, in all likelihood, if government policy was to use a harder lockdown to avoid further spread of Covid-19, they would probably have chosen to leave that harder lockdown in place for a while longer yet. (As I said, the argument about whether lockdown is/was a good thing is for another time and place.)

Thus, the virus is still very much with us and, given this opening up of bars, restaurants, businesses, and yes: gyms, it’s likely that we’ll see something of a resurgence in infections over the next few weeks. We’ve seen this pattern all over the world. In our case, this resurgence is likely to be somewhat worse than we might like, because we still have a significant number of cases circulating, meaning that the pool of potential infection is larger than we might like.

Secondly (and sadly), going to gym is one of those activities during which you are more likely to get infected with SARS-CoV-2. Nothing personal against gyms, it’s just one of those things.

This piece (shared by the NICD, nogal!) shares some of the reasons why gymming is higher risk than other things you could be doing.
It’s a list whose contents you might have seen on this blog before.

Gym is inside.
People breathe more deeply when exercising, potentially spreading more virus, and further.
You cough and splutter more as you push your exercise (see above).
Gym is full of smooth, metal, high frequency touch surfaces: weights, bars, handles etc etc. These are great surfaces for the virus to survive on.
When you sweat, you touch your face more. And when when you touch your face, you’re more likely to spread the stuff you picked up from the surfaces to somewhere where it can enter your body (eyes, nose, mouth).

It’s an infectious virus’ paradise.

And then we have the human element. Because while there are a lot of things you can do to mitigate that higher risk, you’re also relying on other people in the gym doing them too.

And to be honest, that’s not going to happen.

Masks are not going to worn (at the very least, not worn properly).
Equipment is not going to be cleaned after each use: we’re supposed to do that already and virtually no-one does.
Social distancing is not going to be respected: no-one does it in shops or anywhere else, why would they manage it here?

The cleaning team at my gym are actually noticeably brilliant. Happy, helpful, unintrusive and really, really thorough. But how are they going to keep up with people swapping machines left, right and centre? And if they can’t keep up, how clean are those machines going to be, and many of those privileged, “healthy” gym members are going to wait for 30 seconds or a minute or however long and not just shrug and get on with their workout?

Exactly.

For all those reasons, it is, sadly, just not a safe situation.

I like my gym and I miss my gym, and of course, if you feel the same and you want to go back: that’s entirely your call.

 

I’m not saying don’t do it, but this microbiologist is staying away for just a little while longer.

 

* they weren’t; and I don’t speak like this at all. 

Day 143, part 2 – Just say no

Spotted online.
And relevant, given the upcoming move to Level 2 and the precautions people should still be taking.

Just say no… but how?

 

 

I’m certainly not happy to share indoor spaces (here’s why), and so far, I’ve always alternated between “direct” and “too indirect”, but “I’m not setting foot in your haunted plague box” might just be my new goto line from now on.

Day 142, part 2 – Those “Tokyo fireworks”

We’ve surely all seen it shared by muppets on social media:

The fireworks were prepared by Tokyo for the opening ceremony of the Olympic Games this year. The Olympics cannot be opened because of the epidemic, but these fireworks cannot be stored until 2021, so the Olympic fireworks are displayed at this time. Please enjoy the Olympic fireworks under the beautiful Mount Fuji.

And then the fireworks, which look entirely different from any other fireworks you’ve ever seen and are set to music about legendary Japanese hero William Tell, by legendary Japanese composer Gioachino Rossini.

Right up the old national pride street for Japan.

Strangely, the official Olympic Organising Committee didn’t share the link, and even more strangely, given that they the display was just a couple of days ago, here it is in its computer-generated entirety posted back in December 2015:

Almost 5 years ago!
No wonder they couldn’t store the pixels fireworks any longer.

…with the description:

As with the previous work, the background was based on the delusion that “a large-scale fireworks display was held in winter at Lake Kawaguchi in cooperation with the Lake Kawaguchi Fisheries Cooperative in commemoration of Mt. Fuji’s registration as a World Cultural Heritage site.”

Well, your video has gone way beyond that minor “delusion” now, mate.

This is one of those useful tools to sort out who are those less useful tools on your timelines. Obviously, there may already have been signs (football club allegiances etc.) in which case, this can act simply as a helpful confirmation.

I’m happy to assist.