South African Covid-19 News and Discussions 3

Daveogg

Expert Member
Joined
Nov 11, 2003
Messages
1,860
I read somewhere that sa are now adding positive antigen tests the the total number of cases per day.

Please enlighten me ,I thought an antigen can show a positive for a cov_19 ,but can also pick up any small other cold or flu as long as you have a high viral load?
I think the uk is also doing this?

If this is true our number will allways be up as people will allways have colds etc with positive antigen tests, or does an antigen differentiate what you have?
The lateral flow antigen tests answers a binary positive / negative for a specific virus. In this case for SARS CoV2. FAlse positives are possible but unlikely.

"The False positive rate varied from <0.1% to 0.3% on all the LDS using PCR negative saliva samples (see Supplementary Table 1). More extensive testing was performed on the Innova LFD, for which we had a sufficient supply of kits available for wider testing at the time. Device specificity was determined through an analysis of 6954. The percentage of false-positives ranged from 0.00 to 0.49%, with an overall specificity of 99.68%. The false-positive rate was centre-dependent (p = 0.014, Fisher’s exact test). These evaluations noted that where there were challenges in interpreting the results when the test result was “weak” (i.e. the test line was very faint)"

 

Arzy

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Joined
Apr 18, 2004
Messages
28,730
Ow...
6beccbee58f120567e24000f3eec0574.jpg
 

Paulsie

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Apr 6, 2020
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3,147

Geoff.D

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Aug 4, 2005
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Lupus

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Apr 25, 2006
Messages
39,788
Sigh people still seem to think that antibodies created by a vaccine are different to those created if you got it. They aren't injecting you with antibodies people sigh.
 

Paulsie

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Joined
Apr 6, 2020
Messages
3,147
Our vaccination response to this pandemic is the weakest link in our meek efforts to fight this raging, deadly virus. As it stands, just over 14 million people in the country have been fully vaccinated – only 25% of our population. This is a far cry from the 67% needed for us to reach herd immunity.
How is this brief editorial NOT disinformation??
 

flytek

Senior Member
Joined
Jul 22, 2019
Messages
873
Not just a zealot but a clueless one too.
If only they knew that if one includes previous infections then the effective vaccination rate is over its outdated and incorrect 67% threshold for herd immunity and still its not stopping this latest wave. So much bs is one article informing a bunch of fools who will believe it and scream about introducing new lockdowns, travel bans, vaccine mandates and passports to save their vaccinated asses. The unvaccinated have judged thier risk and won't be supporting the stripping of our right or other knee jerk abuses of our freedoms.
 
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Dave

Honorary Master
Joined
Aug 31, 2008
Messages
60,778
Not just a zealot but a clueless one too.
If only they knew that if one includes previous infections then the effective vaccination rate is over its outdated and incorrect 67% threshold for herd immunity and still its not stopping this latest wave. So much bs is one article informing a bunch of fools who will believe it and scream about introducing new lockdowns, travel bans, vaccine mandates and passports to save their vaccinated asses. The unvaccinated have judged thier risk and won't be supporting the stripping of our right or other knee jerk abuses of our freedoms.

Flytik, have you ever considered using the quote function so people might have an idea what you are referring to?
 
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