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Messages - how

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Furthermore in the case you do have a test from Canada within 72 hours of your return from the USA to canada via land you CANNOT use that test, health canada specifically mandates the test be made IN THE USA
I am aware of that. my question was the other way around?

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No
YES
So not clear... And if yes can it the same test used to enter Canada from the US taken within 72 hours? Oly going for one night

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Do you currently need a negative test to enter the USA by land?

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COVID-19 Discussion Board / Re: Dropping Antibody Levels
« on: March 12, 2021, 04:47:54 PM »
Are there certain antibodies test that can pick up immunity from the vaccine. On some of the labCorp tests it specifically says that it cannot detect antibodies caused by the vaccine.

Then thereís this one, which is not publicly available yet https://www.labcorp.com/coronavirus-disease-covid-19/news/labcorp-launches-quantitative-antibody-test-assess-effectiveness-covid-19-vaccines-clinical-trials

Trying to help someone who tested negative for antibodies two weeks after the second dose. Not sure which test they took in Canada.

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Current rules clearly state test must be done in the USA don't ask me why.
Several people I know were denied entry
Yes I heard the same but someone told me today that less than 24 hours might be different just looking for DP

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Anyone have a data for Canadian traveling to the USA for less than 24 hours is a Canada PCR good enough?

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Today at lacolle border:

  • Group sent back because they only had a Canadian test (within 72 hours)
  • Person sent back because his test was 76 hours old
  • Person was sent aside because they questioned the validity of the test, person still waiting since 6:00am


thank you

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Beware, if you're heading to the U.S. For a short ~48hr trip you cannot use your #Canada test results (taken within 72hrs) as proof of negative test when returning. Epidemiology knows no common sense.
You have a source?

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COVID-19 Discussion Board / Re: Pregnancy and Covid
« on: February 02, 2021, 10:29:55 PM »
I know there were women who had a hard time in March/April but I still have a question why are we seeing so much more of this issue this time around.
Some possible reasons
In general, more men were hit the first round than women. (This round is almost a cleanup round as unfortunately many of those who still were not infected got it now R"L)
The UK variant seems to be more of a cause - either because it's more contagious or more harmful to women
There may be a higher percentage of pregnant women now to a lockdown baby boom.

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COVID-19 Discussion Board / Re: Pregnancy and Covid
« on: February 02, 2021, 08:05:16 PM »
Rí Chaim Kanievsky video?

There is a Lakewood woman in her 9th month on a vent in Philadelphia hospital.
Thats one source. Professor Shulman is a well respected Doctor who I trust.

Almost all of the cases I heard about on this forum etc were third trimester.

Likewise for woman in my area who were/are having a hard time.

But yes I'm not a doctor

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COVID-19 Discussion Board / Re: Pregnancy and Covid
« on: February 02, 2021, 05:48:57 PM »
Can't like that post, but I've been hearing a lot of this, especially in the last month or 2. I'm wondering if anyone's keeping track of this stuff.
the Third trimester is when there is the most risk

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COVID-19 Discussion Board / Re: Realistic vaccine date- end of 2021?
« on: January 31, 2021, 02:15:04 PM »
Yes, that's exactly right. 
If you DO have antibodies after the vaccine, it's still possible that your antibody levels are too low and you ARE NOT immune. 
If you DON'T have antibodies after the vaccine, it's still possible that your T cells are now high enough that you ARE immune.

(I assume you mean a few days after the second vaccine, since it would take a while to get high antibodies after the first.)
 
It is possible that in some people the vaccine "works" to produce antibodies, but doesn't "work" to confer immunity.  But you're not entering a contest to see who gets the most antibodies; (semicolon!) you want immunity.  The experts are still not sure what exact value for antibodies/T cells corresponds to immunity. 

You're conflating two ways of thinking about this: What's the current scientific understanding? What do I personally think is likely?  I've tried to answer the first, and you're answering the second.
Could be that they'll take longer to develop antibodies.   Could be that their T cells are high, and just haven't been tested for.  Could be that they are less likely to be immune.  We just don't know yet how to answer that for an individual.  For a large population, like the 20,000 in the clinical trial, we can say that there's a high probability that people will be immune after the vaccine.  But we can't answer that for any one individual, and don't know why a small percentage of people still got covid after the vaccine.
I hear Thank you

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COVID-19 Discussion Board / Re: Realistic vaccine date- end of 2021?
« on: January 31, 2021, 01:16:29 PM »
You have antibodies, but it's not clear what level of antibodies is enough for immunity, and not clear what the importance of antibodies are relative to T cells for immunity.
https://www.cnbc.com/2021/01/12/covid-vaccine-labcorp-ceo-says-recipients-dont-need-antibody-test-afterward.html
Source?

I think you're saying that a positive for antibodies result in a few days after the vaccine does not imply immunity however I personally still think that a high antibody result x amount of days after a vaccine, should imply that your vaccine is working.

IME, not e/o who took the vaccine automatically tetsed positive for antibodies 

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COVID-19 Discussion Board / Re: Realistic vaccine date- end of 2021?
« on: January 31, 2021, 12:55:50 PM »
https://www.nejm.org/doi/full/10.1056/NEJMoa2034577

https://www.medrxiv.org/content/10.1101/2020.12.09.20245175v1



You can see in the following figure how virtually everybody had some antibody response before the second dose

https://www.nejm.org/doi/full/10.1056/NEJMc2032195
I'm not seeing what your implying that a positive test for antibodies does not show that the vaccine worked, @biobook Wanna weigh in?

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