Moderna's covid vaccine may NOT block covid-positive from spreading it

[admin]

Recent data suggests that there is little to no chance of an asymptomatic person spreading COVID-19.
https://www.covid-19forum.org/index.php?topic=551.0
This is very good news. So if a person is symptomatic - stay home. If you are out and you see a person that looks sick or is exhibiting symptoms (like a guy I recently saw at the post office), then get away from them as quickly as possible.
Simple enough.
But could a vaccine disable our ability to discriminate? Could people be infectious and not know it, who would otherwise be symptomatic which would announce their infectiousness to themselves and others?
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https://www.msn.com/en-gb/health/medical/moderna-s-covid-vaccine-may-not-block-covid-positive-from-spreading-it/ar-BB1bk41h?MSCC=1603794046%253Fc

"Moderna's covid vaccine may NOT block covid-positive from spreading it
Natalie Rahhal Us Health Editor
24/11/2020

Moderna's vaccine may not prevent people who catch coronavirus from spreading it to others, the firm's chief scientist has admitted.

But Tal Zaks added that he does 'believe' the shot will do so - trials just haven't tested that yet in a recent https Axios interview.

He urged Americans not to 'over-interpret' the vaccine's promising trial results, which showed it is 94.5 percent effective at preventing people from getting sick from coronavirus.

Neither Pfizer nor Moderna used methods in their vaccine trials that allow them say for sure if their shots prevent transmission.

Although its trials are still ongoing, early data released Monday by AstraZeneca suggests that the vaccine it developed with Oxford University might in fact prevent viral spread.

'Our results show that this vaccine can prevent you from being sick, it can prevent you from being severely sick,' Zaks told Axios.

'They do not show that this vaccine can prevent you from potentially transiently carrying the virus transiently and infecting others.'

Like most vaccines, Moderna's does not kill the virus if you inhale it, so the shot itself is not eliminating the virus.

Instead, it is designed with the intent of preventing the virus from latching onto receptors on human cells that let the virus weasel its way into those cells.

Viruses exist in a weird sort of purgatory between being living and non-living things. Unlike more complicated human cells, viruses can't make their own energy.

Instead, they have to hijack the machinery of human or animal cells, pirating that energy and allowing the virus to make copies of itself.

Without getting into our cells and taking them over for its own purposes, the virus can't replicate. 

And a lower viral load generally means that the virus is less likely to be potent enough to infect someone else. 

But Moderna hasn't proven that.

According to Science Magazine, Pfizer and Moderna only tested trial members who developed potential symptoms of COVID-19 symptoms for the virus.

Without knowing of others members of the trials might have been asymptomatic spreaders, there was no way to say for sure whether the vaccine prevented them from infecting others. 

'When we start the deployment of this vaccine we will not have sufficient concrete data to prove that this vaccine reduces transmission,' Zaks said.   

'Do I believe that it prevents transmission? Absolutely, yes, but I saw this because of the science.

'But absent proof I think it's important we don't change behaviors solely on the basis of vaccination,' Zaks added, suggesting that Americans continue to use non-medical methods like mask wearing and social distancing to stem the spread of coronavirus."

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https://www.msn.com/en-gb/health/medical/moderna-s-covid-vaccine-may-not-block-covid-positive-from-spreading-it/ar-BB1bk41h?MSCC=1603794046%253Fc