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The blood type theory has now been mostly discarded.
Discarded by whom? The new studies did indeed find that Type O has lower risk of contracting COVID. What everyone is emphasizing is that it probably doesn't reduce your risk of developing severe symptoms if you get it - but that likely depends on underlying conditions.
Blood type influences how the immune system fights infection. Researchers have not discarded it.
I feel like something has to be happening. You can see from the numbers that in any location that got hit hard during the winter, their new cases are minimal. This includes places like France, Italy, Spain, New York, New Jersey, Washington State, and Massachusetts.
One reason I think a vaccine will ever work is because I think the virus just keeps changing. We are on version 3.o now.
Before leaving work I forgot I was exposed to someone who had it. But actually NO one in the room got sick. This was before masks or any precautions.
The mutations in the virus so far have not affected its behavior and there is no reason to expect them to make it impossible to develop a vaccine.
Quote:
Originally Posted by Kefir King
Food for thought.
I read about a study a few years ago of intensive records search of German deaths from plague in the Fourteenth Century (gleaned from extensive church and cemetery records records.) It seems that a few extended families had NO plague deaths while being surrounded by the sick and dying galore.
Genealogical studies showed that members of these same families were able to ride out the 1918 Influenza pandemic relatively unscathed. Proceeding further along, the scions of these families are well represented in the segment of the population who seem to be unable to be infected with HIV.
Alas there are ethical problems in testing for immunity given the real risks of killing people.
But yes, I intuitively believe that some people are unable to be infected with SARS CoV-2 and probably every other disease as well. And alack, I am probably not among them having had almost ALL the childhood diseases, decades long bouts of strep infections and both Asian (H2N2) and Hong Kong (H3N2) flu's but I suspect I may be immune to HIV.
Yes, it is possible to have genes that make you less susceptible to a disease. Besides HIV, norovirus is another. I am sure some researchers are energetically pursuing that possibility for SARS-CoV-2 right now. They will look at the entire human genome for people who have been sick and those who were exposed and did not get the virus looking for differences.
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Originally Posted by DorianRo
Blood type/Vitamins and supplements /Genes. This determines how sick you get from COVID. Keep your vitamin/supplement intake high, you will get a MILD case of COVID at best. If nothing at all.
Thats a big problem today. Very few take vitamins and supplements. The older you get the more you need these things as they diminish from your body with age
There is no evidence that high doses of supplements will prevent COVID-19 or modify its course. Deficiencies should be corrected, but that is true COVID-19 or not.
Quote:
Originally Posted by Arktikos
The blood type theory has now been mostly discarded.
Underlying health issues, or lack thereof, will mostly determine severity of illness.
Blood type does affect risk. People with type O blood make antibodies that may bind the virus.
"Blood type does affect risk. People with type O blood make antibodies that may bind the virus"
Again, it is thought that the impact of this is small. Until further research is done, it's protective level is thought to be small. Some physicians do not take it into consideration when considering the many other factors that are in the mix.
Not entirely true. Japan has chugged along with minimal problems, with no lock downs. Taiwan, Vietnam, Thailand have done even better.
I think you'll find Japan did a half-hearted "lock down" and now has a quickly rising infection rate. I wouldn't trust the reporting from the other countries you mentioned...Take a look at Sweden, FL, TX, CA vs Italy, NY & WA, for instance.
In regards CoViD and blood type: no correlation to severity of disease. Types O and Rh- have a slightly lower risk of testing positive for CoV-- not enough difference (15%) to warrant more risky behavior by those with those types. https://pubmed.ncbi.nlm.nih.gov/?cmd...m_uid=32656591
I read about a study a few years ago of intensive records search of German deaths from plague in the Fourteenth Century (gleaned from extensive church and cemetery records records.) It seems that a few extended families had NO plague deaths while being surrounded by the sick and dying galore.
Genealogical studies showed that members of these same families were able to ride out the 1918 Influenza pandemic relatively unscathed. Proceeding further along, the scions of these families are well represented in the segment of the population who seem to be unable to be infected with HIV.
Alas there are ethical problems in testing for immunity given the real risks of killing people.
But yes, I intuitively believe that some people are unable to be infected with SARS CoV-2 and probably every other disease as well. And alack, I am probably not among them having had almost ALL the childhood diseases, decades long bouts of strep infections and both Asian (H2N2) and Hong Kong (H3N2) flu's but I suspect I may be immune to HIV.
The problem is even within the same family there can be significant variation. My aunt constantly gets strep throat, my other aunt gets ear infections constantly and my dad has sinus issues constantly. Well it’s all in the same realm of ENT specialty. So I guess you can say it’s similar. But from a practical standpoint and presentation of symptoms it’s technically not.
I posted this in the current events covid science thread:
Quote:
Scientists uncover SARS-CoV-2-specific T cell immunity in recovered COVID-19 and SARS patients
"Our team also tested uninfected healthy individuals and found SARS-CoV-2-specific T cells in more than 50 percent of them. This could be due to cross-reactive immunity obtained from exposure to other coronaviruses, such as those causing the common cold, or presently unknown animal coronaviruses. It is important to understand if this could explain why some individuals are able to better control the infection," said Professor Antonio Bertoletti, from Duke-NUS' Emerging Infectious Diseases (EID) programme, who is the corresponding author of this study.
It looks like half of all people are immune to covid.
We already knew that half or more of people with COVID have mild or no symptoms. Their immune systems easily fight it off. It's logical that many people may have adaptive immunity from having had other coronaviruses.
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