Why Are Some People at Higher Risk Than Others for Infection After Vaccination?

Many things compromise our immune systems. When that happens, our risk of infection increases.

Before vaccines, people with multiple health problems were at higher risk for hospitalization and death. Vaccines were developed to reduce the severity of symptoms to reduce hospitalizations and the mortality rate. However, they were not created to stop the spread of the virus.

Now that millions of people worldwide have been vaccinated, why are some becoming infected with coronavirus, being hospitalized, and a few deaths from the virus? The vaccine does not stop you from infection. Therefore, vaccinated people may have the virus and never show symptoms of the disease.

As in the pre-vaccine pandemic world, many people (around 40%) never had symptoms. In the post-vaccine pandemic world, probably many more people (maybe as high as 80% – my personal guess – no data has confirmed this) are probably asymptomatic and will never show symptoms but can infect others as asymptomatic people did before the vaccines. https://www.health.com/condition/infectious-diseases/coronavirus/what-is-covid-breakthrough-infection

New Study of Breakthrough Cases of COVID-19

https://www.newsmax.com/health/health-news/covid-high-risk-breakthrough-vaccinated/2021/09/20/id/1037153/. The CDC defines a breakthrough COVID-19 case as a person who was vaccinated, became infected, and has symptoms of COVID-19. At first, the numbers appeared to be very low – around one percent, especially among front-line healthcare workers.

Lately, the percentages appear significantly higher than the low single digits. However, data is scarce regarding how many people are hospitalized with COVID-19 who have been vaccinated. Part of the problem is the way numbers are assessed at hospitals.

You enter the hospital for chest pains (or any other health issue), and you are tested for coronavirus. When you test positive for COVID-19 (with or without symptoms – with or because of the virus), you are classified as a COVID-19 hospitalization. You may never be treated for COVID-19. It does not matter. You are part of the statistical database of coronavirus patients hospitalized.

This is similar to the statistics tracking deaths attributable to those dying because of COVID-19 or those dying with COVID-19. Again, the totals are lumped together.

With current hospitalizations for COVID-19 (with and without vaccinations), the numbers are a bit different than months ago. Data was kept on those having symptoms, being hospitalized, and dying from COVID-19 within fourteen days after receiving the second vaccination. https://www.bmj.com/content/374/bmj.n2244

Assume for a moment that you had the two-dose vaccine in March of 2021, and you were hospitalized for coronavirus in September of 2021. The earlier tracking system of post-vaccination-related COVID-19 cases is not consistently kept. Therefore, we do not know the current breakthrough rate. Does this breakthrough rate increase with time? Is it because the vaccine is waning? Or is it because of other conditions?

British Researchers – QCovid

https://qcovid.org/. QCovid is a tool derived from a study of millions of COVID-19 vaccinated (vaccinated is key in this sense!) people. The study found that those with specific health issues are at higher risk of hospitalization and death from breakthrough coronavirus infections.

People on chemotherapy (immunosuppressed) and recent bone marrow recipients are most vulnerable. Those with HIV/AIDS, dementia (including Parkinson’s disease), and Down syndrome are also at a higher risk. Even those living in nursing homes are at more risk than the general public.


Our immune system is what protects us against any foreign invaders to our bodies. The health situations listed above involve diseases that reduce our immune system effectiveness or totally suppress it. Diabetes, obesity, cardiovascular issues, high blood pressure, and more directly increase a person’s risk of any disease. Any health issue that compromises the immune system increases the risk of coronavirus or other viral, bacterial, or fungal infections.

Continue to do those things you did prior to vaccines to help protect you from COVID-19. Personal protection and avoiding people reduced the risk of transmission. However, many people believe that the vaccine prevents them from getting COVID-19 and they may be partially responsible for the higher infection rates associated with the Delta variant.

Vaccines do protect people from severe symptoms which reduces the risk of hospitalization and death. But vigilance is required to control the spread of the virus.

Live Longer & Enjoy Life! – Red O’Laughlin – RedOLaughlin.com



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