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Covid 19 virus
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coppice:

--- Quote from: Cerebus on March 27, 2020, 05:47:32 pm ---
--- Quote from: coppice on March 27, 2020, 05:22:50 pm ---... and vaccines are just impaired infections.

--- End quote ---

Yes and no. It depends on the type of vaccine. There are basically three types of vaccine.


* Live vaccines These contain a live organism that is capable of stimulating an immune response to the thing you are vaccinating against. In turn these have two subtypes
* Related organisms. This is where an organism that is related to the one you're vaccinating against - but that is not itself disease causing - is used. The classic case is the use of cowpox to vaccinate against smallpox.
* Attenuated organisms. This introduces the actual disease causing pathogen using either a sub-strain that has been 'bred' to be non-pathogenic, or an organism that has been chemically 'attenuated' so it is still 'live' but the biochemical mechanisms of pathogenicity have been crippled.
* Killed vaccines These use the disease causing organism but it has been 'killed' stone dead so that you're just introducing its 'dead body', but the presence of the 'dead body' is still enough to induce an immune response.
* Component vaccines Just a part or parts of the organism are introduced, typically isolated surface proteins, which are still enough to train your immune system to recognise the pathogen if it actually turns up intact.
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That's why I said impaired. I figured it was a vague enough term to cover all the options.  :)
iMo:
While looking for some info on asthma vs. covid I've come across this picture - NO2 concentration in Europe. Would be interesting to compare covid data with the map..
Cerebus:

--- Quote from: SiliconWizard on March 27, 2020, 05:53:29 pm ---Do you happen to know what type of vaccine the seasonal flu vaccines are?

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In the UK, for this year, there were 4 vaccines in use. One, a live attenuated influenza vaccine (i.e. laboratory 'bred' to be non-pathogenic), was used in children (ages 2-17), and the three used in adults were the 'dead body' variety with either 3 or 4 strains of virus covered. One of the killed vaccines (used for age group 65+) had an adjuvant that is intended to improve the uptake of immunity, the others were non-adjuvinated.
Cerebus:

--- Quote from: coppice on March 27, 2020, 05:56:55 pm ---That's why I said impaired. I figured it was a vague enough term to cover all the options.  :)

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Yeah, my objection, or rather desire to cast some more light, was that one can only really characterise the live vaccines as causing infection, and you said "impaired infection". I'm more than happy to stipulate that I'm being pernickety, but in the context of adverse vaccination events I think it helps people understand the territory. It would be easy for people to think that "impaired infection" could imply that adverse events are down to an unimpaired infection happening. That has been the cause of some very notable vaccination tragedies, but is not the only, indeed is probably now the minority, reason for adverse outcomes of vaccination.
nctnico:

--- Quote from: imo on March 27, 2020, 06:08:46 pm ---While looking for some info on asthma vs. covid I've come across this picture - NO2 concentration in Europe. Would be interesting to compare covid data with the map..

--- End quote ---
I don't think you'll find any relevant data. The purple areas are also the most densely populated ones.
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