[acqq]

The papers I've read use virus growth in cells, and even electron microscopy. I don't even know how you managed to claim now that only PCR is used in all the relevant papers.

It's no use for me even trying to discuss with you when your "reading" ends with recognizing that some paper mentions "PCR" and then claiming you're right in general, and all the epidemiologists and virologists aren't.

Anyway, AstraZeneca study just came out, and apparently even when the vaccine efficacy was 90%, the number of asymptomatic cases in the group where that was also measured dropped only 27% percent, which suggest again that the societies can't depend on vaccine providing sterilizing immunity -- it still appears that the vaccinated will be able to transmit the virus, just like the materials that I've referred to suggested.

That's why the UK starts with vaccinating first the most vulnerable, they know it's about protecting from illness, not about making the vaccinated impossible to transmit, as it's covered in many news in the UK -- the expectation is that, at the end, the immunity of population will only be reached once everybody is vaccinated. You can claim that nobody but you gets it, and that your "theory" is better than what's observed in many papers, but it's also a certain symptom.

[phobosanomaly]

Can't measure viral titer with an electron microscope. All the papers are measuring viral titer in the upper airway with PCR.

They may be confirming virus is present with other technologies, but the only way they're measuring viral titer is with PCR.

I don't claim that nobody but me gets it. The head of BioNTech seems to be saying exactly what I'm saying. I don't claim to say anything different from him.

Let's both come together to draft a public health statement that we both would feel comfortable releasing to the public. I'll go first:

Although new vaccine technologies will (1) aid in preventing members of the public from becoming severely ill with COVID-19, (2) will help significantly reduce the number of people contracting the virus in a clinically meaningful sense, and (3) will help to significantly reduce transmission in a community setting, it will be important for members of the public to continue wearing masks and maintaining social distancing until such a significant portion of the population is vaccinated that infection rates as-measured by nasal-swab PCR begin to show significant decreases, and ICU capacity is restored. Based on this, we will incrementally re-open and relax restrictions as deemed appropriate.

Sound ok to you?

[acqq]

I have much more "down to the ground" practical considerations: I don't directly think about some abstract "ICU capacity" or abstract "nasal swabs" meaning too much but:

1) can I or somebody else transmit the virus to somebody I care about and cause them to end on the ICU or die and

2) I know that no country actually measures "infection rates" with PCR but uses that only as a tool to count the "confirmed cases", where a lot of "confirmed cases" are anyway in bad enough state to need hospitalization (meaning it's expected the will need at least something like oxygenation in hospital, if not intubation in the ICU). I also know that there are cases where the CT scan directly shows that somebody is a "case" even if the repeated PCR is negative. So I don't worry too much about the PCR alone, it's just one of the tools.

I also know that some of those who come in contact with the vulnerable which I know will very probably get the vaccine much earlier then I will. I know they will have to behave like they aren't vaccinated, and I know it will be hard for them to accept that, like it was for you to even agree it's a real problem.

I also know that I personally will have to be potentially careful not to think that I can't transmit to somebody who is in worse shape than me, even once I am vaccinated. I know that even if the vaccine has 95% efficacy, it doesn't mean that somebody I care about isn't in the remaining 5%. I also won't know if I am not in the remaining 5% and pre-symptomatic exactly in that moment. And like I've written, it can be it's even worse, and we have to assume that until the studies show otherwise.

And on the higher level, I have to care about everybody actually: as long as the disease spreads, everybody is worse off. The sooner the broad measures don't have to restrict any activity, the better for everybody. I want the real "recovery" as soon as possible.

So what will I do?

a) follow the results of the ongoing studies hoping for some better news, but not assuming everything simply has to be perfect.

b) prepare myself and those I want to remain in contact with that we'll have to be as careful as we are now until there's simply much less prevalence. If I were in Australia now I'd allow myself much more than I will do for some months here where the prevalence (number of people who are new cases every day) is what it is (and it's similar in a big part of the Western world). So I expect that it will be quite hard for everybody for more coming months.

c) try to make as much people as possible understand that the vaccine is almost surely (even with 95% efficacy it's 1 of 20 for whom it's not "working") not something giving them any new "powers." The more are aware of that, there's bigger chance that the prevalence will go down earlier, and that will protect everybody sooner. And it will save some lives, maybe exactly those I know.

In short, it will be very obvious that it's significantly "better" once when the prevalence goes down to something like Australia (7 new cases today among 25 million people, hey! But it's Summer there) and people I care about (including me) are vaccinated. And that "better" won't start at the moment anybody particular has received the vaccine while the prevalence is still much higher. Vaccine simply won't be a magical shield for any single person, as long as the prevalence isn't low. Which is why always more experts now also say that we should do vaccine trials for the children and if needed start vaccinating them too from some point on (once the trials confirm it's safe and the prevalence still exists). I know people who will surely try to be in close contact with their grandchildren before the risk for them is actually low enough.

We will also have to be careful to observe the prevalence in context of how much measures we don't follow at that moment and how big risks we are willing to allow for all we care about. And I consider that all in the local context -- if my city is with much better prevalence than some other, it will be enough.

[phobosanomaly]

Good points, all of them.

Good chat.

Thank you for the conversation.