Ronald R. Cherry
Messenger RNA vaccines for COVID-19
By Ronald R. Cherry
March 11, 2021

Note: Updated April 30, 2021

It is important for truthful scientific information regarding messenger RNA (m-RNA) COVID-19 vaccines, both Pfizer and Moderna, to become widely understood by Americans. During clinical studies m-RNA vaccines for COVID-19 were 80% effective starting 7 days after the first injection, and 95% effective starting 7 days after the second injection. The Israeli Health Ministry has observed Pfizer’s coronavirus vaccine to be 99% effective in preventing hospitalization, serious disease and death for those who are past two weeks from the second dose. m-RNA coronavirus vaccines are extremely effective in the real world a week after the second dose, just as demonstrated in clinical studies. A recent study observed the Pfizer vaccine to have strong effectiveness against the Brazilian and British variants of SARS-CoV-2, and “lower… but very impressive” effectiveness against the South African variant.

Pain at the injection site is common; low grade fever, fatigue, muscle aches or headaches may occur, usually on day 2 or 3 and usually lasting about 1 day. There were no deaths from these m-RNA vaccines during clinical trials involving 40,000 people. A recent study observed a 2% risk of allergic reaction from m-RNA vaccines, and a 0.025% (1 in 4,000) risk of anaphylaxis – 94% of whom were women. Average time to anaphylaxis was 17 minutes after vaccination; 6% of these anaphylaxis cases required treatment in an ICU (0.0015% of all vaccinated = 1 in 65,000); all recovered from anaphylaxis with no deaths, thus professional medical treatment for severe reactions has been very effective. The CDC states “A review of available clinical information including death certificates, autopsy, and medical records revealed no evidence that vaccination contributed to patient deaths,” which means that the very rare deaths which have occurred soon afterward were most likely due to other causes, therefore likely 0 deaths in 65,000. Balance this tiny and acceptable risk against the 1.8% case fatality rate of COVID-19 in the United States, which is much higher in the elderly and those with co-morbid conditions such as diabetes, hypertension, obesity, immunosuppression, or underlying heart, lung or kidney disease, and balanced against the overall American mortality rate of 175 deaths per 100,000 (114 in 65,000), and against a 12% mortality in those hospitalized with COVID-19 (7,800 in 65,000).

It is believed by most vaccine authorities that, in pregnant women and their fetuses, the risk of harm from COVID-19 illness is greater than the risk of m-RNA vaccine. The CDC and Mayo Clinic note that pregnant women who have COVID-19 appear more likely to develop severe respiratory disease requiring ICU care and are more likely to be placed on a ventilator. Some research suggests that pregnant women with COVID-19 are also more likely to have a premature birth and cesarean delivery, and their babies are more likely to be admitted to a neonatal unit. Pregnant women and those of childbearing potential should discuss this issue with their OB-GYN physician. There is no scientific evidence that these m-RNA vaccines can cause infertility. People with a history of anaphylaxis to prior vaccines, and those with known allergic reactions to polyethylene glycol or polysorbate 80, should consult with a Board-Certified Allergist before receiving any vaccine. People who experience an allergic reaction within the first 30 minutes after receiving the first dose of an mRNA COVID-19 vaccine should not receive the second dose.

m-RNA vaccines are only active in a person's cell cytoplasm where they attach to ribosomes in the process of producing SARS-CoV-2 spike proteins (not the virus its self), thereby inducing natural immunity against the Coronavirus. These vaccines do not enter the cell nucleus and have no biologic power to affect our genetic code or inheritance. These m-RNA vaccines do not empower others to track your position or movements – a truly wild and scientifically uninformed conspiracy theory. These m-RNA vaccines do not contain mercury. These m-RNA vaccines are not produced using animal cells or tissue. These m-RNA vaccines are not produced using fetal cells or tissue, aborted or otherwise. These m-RNA vaccines will not cause you to become positive for SARS-CoV-2 by nasal swab RNA testing.

Vaccination is recommended even for those who have recovered from COVID-19 illness; the best timing for this is about 2 or 3 months after recovery. The CDC recommends a two injection regimen spaced three or four weeks apart, however recent research indicates that survivors of COVID-19 develop adequate immunity after only one m-RNA injection. I was vaccinated with one of the COVID-19 m-RNA vaccines in the standard two injection regimen, experiencing arm soreness at the injection site with both, and some fatigue and body aches after the second. I am witness to the incredible destructiveness to human organs in patients who develop critical COVID-19 illness, thus I fear the disease and not these wonderful vaccines.

Ronald R. Cherry, MD
Board Certified Pulmonologist
© Ronald R. Cherry


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Ronald R. Cherry

Ronald R. Cherry, MD, is a board-certified specialist in lung disease who is in the full-time practice of medicine in Sweetwater, Tennessee... (more)


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