True. Cross-immunity works if the viruses are similar. In this paper, half of the samples (n=37) that were not infected with SARS showed cross-immunity responses.
Sailors who spend a lot of time on ships are said to be careful to take a lot of vitamin D. This is because they don't want to get sick on the sea. Vitamin D activates immune function. It is said to be an essential nutrition for T cells that destroy infected cells.
If you are young, most people will recover from the infection and cross-immunity will work after that. Vaccines may also be effective for the elderly and those suffering from diseases.
We should not expect antibodies from a vaccine against a highly mutated virus. The antibodies don't seem to last very long to begin with. It is important to stay healthy and take vitamin D to keep the immune system working properly.
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@dockaurGnature.com/articles/s4158…
This paper shows that people who recovered from SARS 17 years ago also had cross-immunity against COVID. This indicates that T-cell immunity works for a long time and is resistant to mutation.
@dockaurGmedicalxpress.com/news/2021-03-c…
The T cells of symptomless infected people produce large amounts of two proteins called IFN-γ and IL-2. These proteins help to adjust the immune response. This allows the infection to be cleared without causing a cytokine storm.
@dockaurGsciencedaily.com/releases/2010/…
The important thing is to take nutrition that is good for the immune system in order for the immune system to work properly. Vitamin D is an essential nutrient for T cells to work properly. It can be made in the skin when exposed to sunlight.
@JamesTodaroMD Excellent work, Dr.Todaro.
I'm Japanese and I've been wondering about the difference in severity and mortality rates from the new coronas between Asia and the Western world. Then I was surprised to see the paper in Nature on July 15.
@JamesTodaroMD Seventeen years later, memory T cells in SARS survivors are still responding to the new coronavirus, and the positive rate of antibody tests in Tokyo in June was only 0.1%. Almost no antibodies were produced.
@JamesTodaroMD This means that even before the pandemic, some kind of virus had already caused memory T cells to react to the new corona virus in Japan.
This is true for all of Asia, including Japan.