A collaborative project called the COVID Human Genetic Effort has been studying thousands of people across different countries, looking for genetic variations that might reveal why some people never get COVID-19, as well as why certain people get so sick while others don't.
Another recent article is titled: "Why are some people naturally immune to COVID?"
Here are some key excerpts.
Recent scientific evidence has shown that some people are naturally immune to COVID and all its mutations...
The story of entire families except one person being infected with an illness is not new, and there are also people who continue to become infected even after they have been fully vaccinated and have recovered from the virus. According to the UK Office for National Statistics, one out of every 25 people in the United Kingdom is infected with coronavirus; however, a large number of people are not infected. Scientists have clearly stated that some people have natural defences against coronavirus, and it is not exactly clear why, especially since they continue to be immune even in the face of new mutations...
Researchers in countries such as the United States and Brazil are analysing the genetic variations found in such [virus resistant] people. At University College London, the scientific community is investigating the group of health workers who, despite being on the front line of the pandemic, have turned out to be immune. One such worker is 34-year-old emergency nurse Lisa Stockwell, who has always had negative tests since 2020.
The UCL researchers examined the health workers' blood before the vaccines were launched, confirming that they did not have antibodies and had therefore never been infected. They did have T cells, however, which are found in people who have recovered from coronavirus. This type of cell is created by the immune system to defend the body and has the function of attacking and destroying viral cells.
Another October 2021 article is titled "Some people might be genetically resistant to COVID-1."
Can you be genetically resistant to the novel coronavirus? A new paper suggests it is possible people might have the power to fight off COVID-19 because of their genetics. Researchers said in the paper published in the medical journal Nature Immunology there might be people who are resistant to the SARS-CoV-2 virus, which causes COVID-19.
Scientists said the virus has been known to invade households but leave one or two people without an infection, per Science Alert.
The introduction of SARS-CoV-2 to a naà ¯ve population, on a global scale, has provided yet another demonstration of the remarkable clinical variability between individuals in the course of infection, ranging from asymptomatic infections to life-threatening disease," researchers wrote in the paper.
"Our understanding of the pathophysiology of life-threatening COVID-19 has progressed considerably since the disease was first described in December 2019, but we still know very little about the human genetic and immunological basis of inborn resistance to SARS-CoV-2," they wrote...
Virologists Theodora Hatziioannou and Paul Bieniasz, who both work at the Rockefeller University in New York City, are trying to figure out how people can be super immune to the coronavirus. Those who are super immune can block mutant coronavirus strains in many cases...
Another article is titled "A lucky few seem 'resistant' to Covid-19. Scientists want to know why."
The article begins with a story of a husband in Brazil who got deathly ill with COVID. But the wife sharing the same close quarters with her husband while he was infected and able to transmit the virus and who never wore a mask in the home with him, and who shared the same bed and was physically intimate, never got infected. She was tested for an active or past infection twice and her bloodwork came up negative.
Moreover, the woman went to a meeting at the University of SÃ £o Paulo where an infected attendee set off a chain reaction of positivity - but the woman did not get infected as shown by negative tests.
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