If you are in a high-risk group for COVID-19 you could use prevention/prophylactic protocols or prepare to use effective, early treatment within 4 days of symptoms first appearing in order to avoid serious stage COVID-19 symptoms.
- Chronic kidney disease
- COPD (chronic obstructive pulmonary disease)
- Down Syndrome
- Heart conditions, such as heart failure, coronary artery disease, or cardiomyopathies
- Immunocompromised state (weakened immune system) from solid organ transplant
- Obesity (body mass index [BMI] of 30 kg/m2 or higher but < 40 kg/m2)
- Severe Obesity (BMI ≥ 40 kg/m2)
- Sickle cell disease
- Type 2 diabetes mellitus
To the CDC's high-risk list, add people with vitamin D deficiencies, people who have had recent influenza vaccinations, and people with dementia.
Covid-19 isn’t a random killer. Only people who have one of four chronic health problems is likely to die from the virus, a major new study has confirmed. 2021. The ‘big four’ are heart disease, breathing or kidney (renal) problems, or cancer—and these risks are magnified if the person is also obese, or is suffering from several of the diseases at the same time. Age also plays a part, but again only if the patient has one of the four health problems.
A QUARTER of all UK Covid fatalities had dementia: Huge death toll among elderly is revealed. February 2021. One in four coronavirus deaths have been among those battling with dementia
WHO IS *NOT* PRONE TO SERIOUS COVID CASES
Many persons have a pre-existing immunity to COVID-19. A review of evidence on pre-existing immunity in the BMJ.
At least six studies have reported T cell reactivity against SARS-CoV-2 in 20% to 50% of people with no known exposure to the virus. ...In a study of donor blood specimens obtained in the US between 2015 and 2018, 50% displayed various forms of T cell reactivity to SARS-CoV-2.511 A similar study that used specimens from the Netherlands reported T cell reactivity in two of 10 people who had not been exposed to the virus. In Germany reactive T cells were detected in a third of SARS-CoV-2 seronegative healthy donors (23 of 68). In Singapore a team analysed specimens taken from people with no contact or personal history of SARS or covid-19; 12 of 26 specimens taken before July 2019 showed reactivity to SARS-CoV-2, as did seven of 11 from people who were seronegative against the virus.... Reactivity was also discovered in the UK and Sweden.
Young, healthy persons are low-risk and a study published in late 2020 revealed that people with type O or Rh−negative blood may be at slightly lower risk from COVID-19.
The Common Cold Suppresses COVID Infection. March 2021
Human rhinovirus infection blocks SARS-CoV-2 replication within the respiratory epithelium: implications for COVID-19 epidemiology. March 2021. The Journal of Infectious Diseases. By Kieran Dee, Daniel M Goldfarb, Joanne Haney, Julien A R Amat, Vanessa Herder, Meredith Stewart, Agnieszka M Szemiel, Marc Baguelin, Pablo R Murcia
A genetic variant inherited from Neanderthals reduces the risk of severe COVID-19. DNA variants passed on to modern humans from Neanderthals can increase as well as decrease our ability to fight SARS-CoV-2, a new PNAS study finds. The genetic variant [that decreases risk] has increased in frequency over the last millennium ... It reduces the risk of a person becoming seriously ill with COVID-19 by around 20% . .. occurs in about half of people living outside Africa and in around 30% of people in Japan... Okinawa Institute of Science and Technology (OIST) Graduate University