Waste water tested for Covid19

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Re: Waste water tested for Covid19

Post by BBCDoc » Thu, 03 Jun 2021 8:08 pm

Here’s an example of infection rates among vaccinees, the data for Sinovac that led to WHO approval

https://cdn.who.int/media/docs/default- ... 2488098d_5


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Re: Waste water tested for Covid19

Post by MOCHS » Thu, 03 Jun 2021 9:53 pm

1.7 million people in SG have finished both doses.

Taking the 95% efficacy into account, you would expect 5% of them (88K people) to probably have less than stellar immune response. So I won’t be surprised if you read news everyday of vaccinated people being infected.

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Re: Waste water tested for Covid19

Post by Myasis Dragon » Thu, 03 Jun 2021 10:58 pm

MOCHS wrote:
Thu, 03 Jun 2021 9:53 pm
1.7 million people in SG have finished both doses.

Taking the 95% efficacy into account, you would expect 5% of them (88K people) to probably have less than stellar immune response. So I won’t be surprised if you read news everyday of vaccinated people being infected.
That 5 percent number is somewhat misleading. Studies have shown in the USA that if one of the 5 percent bunch contracts Covid, it is far less serious, doesn't affect the respiratory system, and doesn't require hospitalization.

So even if you're not one with complete immunity, you're still way ahead of the game.

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Re: Waste water tested for Covid19

Post by x9200 » Fri, 04 Jun 2021 12:58 am

BBCDoc wrote:
Thu, 03 Jun 2021 8:08 pm
Here’s an example of infection rates among vaccinees, the data for Sinovac that led to WHO approval

https://cdn.who.int/media/docs/default- ... 2488098d_5


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The optimistic data on the effectiveness include:
a) hospitalization
b) symptoms
c) ICU admission
d) death
These data (again) are not questioned, but could you point me please to the data in this report showing how the vaccine inhibits transmission (infections in vaccinated)?

I am very sure it inhibits but would be interesting to see some solid data. It should inhibit based on the simple fact that it limits the amount of viruses in the body but how this translates to the transmission rates?

And why it is important? Because even if one is fully vaccinated and shows no symptoms he may still carry the virus and endanger those who are not yet vaccinated. Also it rises the question whether the herd immunity ever will happen - the transmission rates will still be high enough so the virus may spread, just people will not get sick as long as the effects of the vaccines last.

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Re: Waste water tested for Covid19

Post by ProvenPracticalFlexible » Fri, 04 Jun 2021 9:02 am

x9200 wrote:
Thu, 03 Jun 2021 6:30 pm
There is a subtle difference between expectation of zero infection and reading practically every day about what appears to be a significant fraction of infected population being earlier fully vaccinated. Do you have any data showing the infection rate among the fully vaccinated? Unfortunately I could not find any. This would cut the speculations.
if you are looking for Singapore specific, I don't think you are going to find any for many reasons. But it also would be quite difficult to do any statistically meaningful analysis as the numbers of cases have still been so low, and the vaccination levels only started to go up.

But for more early vaccination countries like Israel, yes there's been studies published in respectable publications:
https://www.thelancet.com/journals/lanc ... 8/fulltext

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Re: Waste water tested for Covid19

Post by x9200 » Mon, 07 Jun 2021 7:45 am

Ok, here it goes:
Image
Cases since Apr 28, image linked from CNA, but source is MOH (could not find it on MOH website)
https://www.channelnewsasia.com/news/si ... d-14958000

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Re: Waste water tested for Covid19

Post by x9200 » Wed, 09 Jun 2021 8:02 am

Another interesting piece of the puzzle:
https://www.cdc.gov/media/releases/2021 ... risks.html
CDC COVID-19 Study Shows mRNA Vaccines Reduce Risk of Infection by 91 Percent for Fully Vaccinated People
Different strains? Methodology?

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Re: Waste water tested for Covid19

Post by Lisafuller » Thu, 10 Jun 2021 1:00 am

abbby wrote:
Tue, 01 Jun 2021 10:24 am
Quite surprised when I read this.

https://www.channelnewsasia.com/news/si ... y-14920218
It’s actually pretty amazing that they can detect viral fragments in waste water, technology has really come so far.

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Re: Waste water tested for Covid19

Post by Lisafuller » Thu, 10 Jun 2021 1:03 am

ProvenPracticalFlexible wrote:
Fri, 04 Jun 2021 9:02 am
x9200 wrote:
Thu, 03 Jun 2021 6:30 pm
There is a subtle difference between expectation of zero infection and reading practically every day about what appears to be a significant fraction of infected population being earlier fully vaccinated. Do you have any data showing the infection rate among the fully vaccinated? Unfortunately I could not find any. This would cut the speculations.
if you are looking for Singapore specific, I don't think you are going to find any for many reasons. But it also would be quite difficult to do any statistically meaningful analysis as the numbers of cases have still been so low, and the vaccination levels only started to go up.

But for more early vaccination countries like Israel, yes there's been studies published in respectable publications:
https://www.thelancet.com/journals/lanc ... 8/fulltext
Exactly. Numbers in Singapore are far too small for there to be any useful statistics.

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Re: Waste water tested for Covid19

Post by x9200 » Thu, 10 Jun 2021 8:19 am

Lisafuller wrote:
Thu, 10 Jun 2021 1:03 am
ProvenPracticalFlexible wrote:
Fri, 04 Jun 2021 9:02 am
x9200 wrote:
Thu, 03 Jun 2021 6:30 pm
There is a subtle difference between expectation of zero infection and reading practically every day about what appears to be a significant fraction of infected population being earlier fully vaccinated. Do you have any data showing the infection rate among the fully vaccinated? Unfortunately I could not find any. This would cut the speculations.
if you are looking for Singapore specific, I don't think you are going to find any for many reasons. But it also would be quite difficult to do any statistically meaningful analysis as the numbers of cases have still been so low, and the vaccination levels only started to go up.

But for more early vaccination countries like Israel, yes there's been studies published in respectable publications:
https://www.thelancet.com/journals/lanc ... 8/fulltext
Exactly. Numbers in Singapore are far too small for there to be any useful statistics.
Depends Lisa what one tries to determine. 700 case from multiple clusters should normally be good enough to see some basic trends. Out of these 700 cases, 180 people were earlier vaccinated and 120 fully vaccinated. How would you explain this discrepancy to the CDC data concerning the same vaccines?

To make it clear, I am not into any conspiracy theory but would like to understand what's going on.

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Re: Waste water tested for Covid19

Post by ProvenPracticalFlexible » Thu, 10 Jun 2021 9:05 am

x9200 wrote:
Thu, 10 Jun 2021 8:19 am
Lisafuller wrote:
Thu, 10 Jun 2021 1:03 am
ProvenPracticalFlexible wrote:
Fri, 04 Jun 2021 9:02 am


if you are looking for Singapore specific, I don't think you are going to find any for many reasons. But it also would be quite difficult to do any statistically meaningful analysis as the numbers of cases have still been so low, and the vaccination levels only started to go up.

But for more early vaccination countries like Israel, yes there's been studies published in respectable publications:
https://www.thelancet.com/journals/lanc ... 8/fulltext
Exactly. Numbers in Singapore are far too small for there to be any useful statistics.
Depends Lisa what one tries to determine. 700 case from multiple clusters should normally be good enough to see some basic trends. Out of these 700 cases, 180 people were earlier vaccinated and 120 fully vaccinated. How would you explain this discrepancy to the CDC data concerning the same vaccines?

To make it clear, I am not into any conspiracy theory but would like to understand what's going on.
Still not enough data. But I'd expect that the highest risk frontline workers in Singapore, such as healthcare workers, airport staff etc, had higher % of vaccinated people, as they got their shots in Dec-Feb before the rest.

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Re: Waste water tested for Covid19

Post by x9200 » Thu, 10 Jun 2021 9:22 am

ProvenPracticalFlexible wrote:
Thu, 10 Jun 2021 9:05 am
x9200 wrote:
Thu, 10 Jun 2021 8:19 am
Lisafuller wrote:
Thu, 10 Jun 2021 1:03 am


Exactly. Numbers in Singapore are far too small for there to be any useful statistics.
Depends Lisa what one tries to determine. 700 case from multiple clusters should normally be good enough to see some basic trends. Out of these 700 cases, 180 people were earlier vaccinated and 120 fully vaccinated. How would you explain this discrepancy to the CDC data concerning the same vaccines?

To make it clear, I am not into any conspiracy theory but would like to understand what's going on.
Still not enough data. But I'd expect that the highest risk frontline workers in Singapore, such as healthcare workers, airport staff etc, had higher % of vaccinated people, as they got their shots in Dec-Feb before the rest.
I agree this could be the reason (at least one of them).

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Re: Waste water tested for Covid19

Post by Lisafuller » Thu, 10 Jun 2021 11:55 pm

x9200 wrote:
Thu, 10 Jun 2021 8:19 am
Lisafuller wrote:
Thu, 10 Jun 2021 1:03 am
ProvenPracticalFlexible wrote:
Fri, 04 Jun 2021 9:02 am


if you are looking for Singapore specific, I don't think you are going to find any for many reasons. But it also would be quite difficult to do any statistically meaningful analysis as the numbers of cases have still been so low, and the vaccination levels only started to go up.

But for more early vaccination countries like Israel, yes there's been studies published in respectable publications:
https://www.thelancet.com/journals/lanc ... 8/fulltext
Exactly. Numbers in Singapore are far too small for there to be any useful statistics.
Depends Lisa what one tries to determine. 700 case from multiple clusters should normally be good enough to see some basic trends. Out of these 700 cases, 180 people were earlier vaccinated and 120 fully vaccinated. How would you explain this discrepancy to the CDC data concerning the same vaccines?

To make it clear, I am not into any conspiracy theory but would like to understand what's going on.
The numbers are still not large enough to make any conclusions. PPF’s theory is plausible.

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