The percentage of the population required to be immune in order to produce herd immunity depends on the R0 value for the disease. Measles has a very high R0 value (12-18) so requires something like 95% of the population to be immune in order to provide herd immunity. The R0 for Covid-19 is much lower so it's been calculated that we would need around 60% of the population to be immune to achieve herd immunity.Herd immunity is a concept that depends on a 95% uniform vaccination level that means throughout a population if any people even in small enclaves do not take up on the vaccination the concept of herd immunity disappears as has happened with measles.
Great but how many would die in the process of achieving that naturally so it depends on vaccination levels and has to be uniform throughout the total population any pockets of non immunized people within the population destroys the concept of herd immunity.The percentage of the population required to be immune in order to produce herd immunity depends on the R0 value for the disease. Measles has a very high R0 value (12-18) so requires something like 95% of the population to be immune in order to provide herd immunity. The R0 for Covid-19 is much lower so it's been calculated that we would need around 60% of the population to be immune to achieve herd immunity.
The maths behind it is explained here:- https://plus.maths.org/content/maths-minute-r0-and-herd-immunity
The percentage of the population required to be immune in order to produce herd immunity depends on the R0 value for the disease. Measles has a very high R0 value (12-18) so requires something like 95% of the population to be immune in order to provide herd immunity. The R0 for Covid-19 is much lower so it's been calculated that we would need around 60% of the population to be immune to achieve herd immunity.
The maths behind it is explained here:- https://plus.maths.org/content/maths-minute-r0-and-herd-immunity
This sort of assumes, that if there is no vaccine, those that get the virus will be protected from getting it again.
So then does that mean 60% of the population at a minimum will have to get it in order to protect the remaining 40%...
Very true!If masks are good enough to protect our NHS staff then there good enough for everyone to wear one
Normally when I go out to the local Tesco (10 minutes walk away; a couple of times a week), I wear two very long scarves wrapped around my face and mouth. The supermarket practises strict social distancing. Perhaps 30% of the customers are wearing some form of facial covering. Nobody really ever comes close to anyone else. The supermarket is huge and airy... so there aren’t quite the problems that come from being in a relatively confined space (which would further potentiate the infectivity of the virus).
I appreciate the importance of wearing a mask.... to inhibit the transmission of the virus (from me); and to foster confidence generally as the economy moves slowly towards opening up.
The government is encouraging facial coverings, especially on public transport and in more crowded environments.
With this in mind, I bought a couple of days ago masks offered on sale by Diabetes.co.uk. One has just arrived... and I have to tell you I am horribly, horribly disappointed.
Although it is a recognised branded product with a rating of n99, it is just totally unsuitable for me. It was monumentally overpriced (up to almost double the price of other suppliers)... and it is for single use only. As a pensioner, there is no way I could ever afford to spend £22 each time I go shopping! I am truly disappointed. Yes, ‘caveat emptor’ (‘let the buyer beware’). I should have taken more care when responding to the offer sent by Diabetes.co.uk. (I have another mask coming from DCUK.... a lower spec n95... on offer at half price... but, again, it will be unusable, for the reasons above).
Bearing in mind that the main reasons to wear a mask are to prevent ME from spreading the virus (which could happen in a public place IF I am not showing symptoms [but have the disease] and therefore not self-isolating) AND to foster a sense of security in my fellow man, I have ordered a more expensive CYCLING mask... which is reusable, will keep out most stuff, and will prevent droplets issuing from me.... and which also looks the part! It will certainly, I think, encourage confidence in my fellow shoppers. And, since I invested in an electric bike a year ago... and since I live in a city.... it will double up in protecting me against the pollution hazards of urban travel, albeit that the virus has, for the moment, neutralised much of that.
I am very disappointed in the approach that DCUK has taken in marketing these masks. Very disappointed.
The modern way to market is for many of our socially responsible companies and corporations to guide the purchaser to avoid a mistaken purchase. Sometimes this means spelling out clearly the nature of the product.... and even to add a gentle warning if the product is unlikely to meet expectations (in the case where the product has a narrow range of applications).
I note that DCUK are not accepting returns (even if the product is still sealed, though obviously not if it has been opened). I note too that other suppliers are accepting returns, in line with distance selling regulations.
I’ve been saying this very thing since I first heard of corona being a respiratory disease....seemed obvious to me that we should be wearing a mask so that’s what I’ve been doing. Got loads of funny looks but I’d rather be safe than fashionable.The only reason we have not been advised to wear a mask from day one is simple the Government did not have enough stock for the NHS NEVER MIND us. It is quiet simple the government are finding it even harder to keep the public convinces we don’t need masks. If they lift lockdown in stages you can be you bottom dollar a mask wearing outdoors will be MANDATORY.
Look on YouTube....loads of videos on making them.What material are you making your masks from? The masks I bought aren't a close fit so I tend to have to keep touching my face to adjust them - which is not good. Thought I might try making some myself but not sure of the materials to use. The ones I bought are black material with a central seam shaped to cover you nose, they seem to be a knitted fabric with foam between the cloth layers.
Government website actually has info and instructions on how to make a mask !This is all very true and I am glad you live in a country where the government has executed a plan to supply the correct levels of PPE. This is not the case in the UK. The range of materials that have been suggested as suitable for making a DIY mask is beyond reason and with all this information on how to make one yourself there is next to no QC or IC on it.... and the internet is just full of so much misinformation.
The UK government has dragged this out simply because of supply issues. Is something better than nothing? In this I just don't know.
They have only recently figured out Care homes are an area for concern.... they've not done well in my opinion.
Normally when I go out to the local Tesco (10 minutes walk away; a couple of times a week), I wear two very long scarves wrapped around my face and mouth. The supermarket practises strict social distancing. Perhaps 30% of the customers are wearing some form of facial covering. Nobody really ever comes close to anyone else. The supermarket is huge and airy... so there aren’t quite the problems that come from being in a relatively confined space (which would further potentiate the infectivity of the virus).
I appreciate the importance of wearing a mask.... to inhibit the transmission of the virus (from me); and to foster confidence generally as the economy moves slowly towards opening up.
The government is encouraging facial coverings, especially on public transport and in more crowded environments.
With this in mind, I bought a couple of days ago masks offered on sale by Diabetes.co.uk. One has just arrived... and I have to tell you I am horribly, horribly disappointed.
Although it is a recognised branded product with a rating of n99, it is just totally unsuitable for me. It was monumentally overpriced (up to almost double the price of other suppliers)... and it is for single use only. As a pensioner, there is no way I could ever afford to spend £22 each time I go shopping! I am truly disappointed. Yes, ‘caveat emptor’ (‘let the buyer beware’). I should have taken more care when responding to the offer sent by Diabetes.co.uk. (I have another mask coming from DCUK.... a lower spec n95... on offer at half price... but, again, it will be unusable, for the reasons above).
Bearing in mind that the main reasons to wear a mask are to prevent ME from spreading the virus (which could happen in a public place IF I am not showing symptoms [but have the disease] and therefore not self-isolating) AND to foster a sense of security in my fellow man, I have ordered a more expensive CYCLING mask... which is reusable, will keep out most stuff, and will prevent droplets issuing from me.... and which also looks the part! It will certainly, I think, encourage confidence in my fellow shoppers. And, since I invested in an electric bike a year ago... and since I live in a city.... it will double up in protecting me against the pollution hazards of urban travel, albeit that the virus has, for the moment, neutralised much of that.
I am very disappointed in the approach that DCUK has taken in marketing these masks. Very disappointed.
The modern way to market is for many of our socially responsible companies and corporations to guide the purchaser to avoid a mistaken purchase. Sometimes this means spelling out clearly the nature of the product.... and even to add a gentle warning if the product is unlikely to meet expectations (in the case where the product has a narrow range of applications).
I note that DCUK are not accepting returns (even if the product is still sealed, though obviously not if it has been opened). I note too that other suppliers are accepting returns, in line with distance selling regulations.
I am tempted to go for the face shield visor. I do see people using these in the work place and in some shops (B and Q). They certainly will keep fluids from moving in either direction.Normally when I go out to the local Tesco (10 minutes walk away; a couple of times a week), I wear two very long scarves wrapped around my face and mouth. The supermarket practises strict social distancing. Perhaps 30% of the customers are wearing some form of facial covering. Nobody really ever comes close to anyone else. The supermarket is huge and airy... so there aren’t quite the problems that come from being in a relatively confined space (which would further potentiate the infectivity of the virus).
I appreciate the importance of wearing a mask.... to inhibit the transmission of the virus (from me); and to foster confidence generally as the economy moves slowly towards opening up.
The government is encouraging facial coverings, especially on public transport and in more crowded environments.
With this in mind, I bought a couple of days ago masks offered on sale by Diabetes.co.uk. One has just arrived... and I have to tell you I am horribly, horribly disappointed.
Although it is a recognised branded product with a rating of n99, it is just totally unsuitable for me. It was monumentally overpriced (up to almost double the price of other suppliers)... and it is for single use only. As a pensioner, there is no way I could ever afford to spend £22 each time I go shopping! I am truly disappointed. Yes, ‘caveat emptor’ (‘let the buyer beware’). I should have taken more care when responding to the offer sent by Diabetes.co.uk. (I have another mask coming from DCUK.... a lower spec n95... on offer at half price... but, again, it will be unusable, for the reasons above).
Bearing in mind that the main reasons to wear a mask are to prevent ME from spreading the virus (which could happen in a public place IF I am not showing symptoms [but have the disease] and therefore not self-isolating) AND to foster a sense of security in my fellow man, I have ordered a more expensive CYCLING mask... which is reusable, will keep out most stuff, and will prevent droplets issuing from me.... and which also looks the part! It will certainly, I think, encourage confidence in my fellow shoppers. And, since I invested in an electric bike a year ago... and since I live in a city.... it will double up in protecting me against the pollution hazards of urban travel, albeit that the virus has, for the moment, neutralised much of that.
I am very disappointed in the approach that DCUK has taken in marketing these masks. Very disappointed.
The modern way to market is for many of our socially responsible companies and corporations to guide the purchaser to avoid a mistaken purchase. Sometimes this means spelling out clearly the nature of the product.... and even to add a gentle warning if the product is unlikely to meet expectations (in the case where the product has a narrow range of applications).
I note that DCUK are not accepting returns (even if the product is still sealed, though obviously not if it has been opened). I note too that other suppliers are accepting returns, in line with distance selling regulations.
Government website actually has info and instructions on how to make a mask !
My wife works for the DWP and I am home shielding.
That's good to hear @Bluetit1802 unfortunately there are not enough laptops to go round her office... so she goes in every day.My niece and her husband work for the DWP. They have been sent home and are being provided with a kit so they can work from home because their son is shielding.
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