Since the outbreak of the Coronavirus pandemic, scientists have been racing to develop preventive vaccines to halt the transmission of COVID-19, which has claimed the lives of thousands of people worldwide.
When such vaccines were developed by major pharmaceutical firms, people all over the world were perplexed as to which vaccine was the most successful in combating the disease.
Such accidents caused people to feel afraid of receiving COVID-19’s vaccines and caused many to wonder how effective they are.
COVID Vaccines: Are They Effective?
The Pfizer vaccine is said to be 91.3 % safe against mild and severe cases, according to Yale Medicine’s journal. The Pfizer-BioNTech vaccine has strict storage requirements. It has, for example, necessitated that shipments must be stored in extremely cold, temperature-controlled compartments.
Such requirements have increased the vaccine’s price which made it harder to import by third world countries.
Most of the other COVID vaccines have been reported to protect from severe symptoms at a 100% rate, yet they vary on how much they protect from mild to moderate symptoms.
So, in short, the answer is yes, all the vaccines are effective.
Differences Between The 3 Most Well-Known Vaccines: Pfizer, Moderna, AstraZeneca
Starting with the Pfizer vaccine, which is a cutting-edge messenger RNA (mRNA) vaccine. It is different from vaccines that contain a virus that has been inactivated, the Pfizer-BioNTech mRNA vaccine provides a list of genetic instructions from the SARS CoV-2 virus to host cells in the body, essentially allowing them to create duplicates of the virus’s spike proteins to those cells.
The spike proteins are responsible for infiltrating and breaching host cells. These proteins trigger the body’s immune system, resulting in the production of antibodies and the formation of memory cells that can identify and react if the body is exposed to the actual virus.
The Moderna vaccine is an mRNA-based injection that sends instructions to the body’s cells to make a spike protein which allows our body’s immune system to recognize the virus once it reaches the body. Against mild and moderate infection, the Moderna vaccine is almost 90% successful.
Finally, the Oxford-AstraZeneca vaccine is cheaper per dose than any of its counterparts. One of its main characteristics that distinguish it is that it can be transported and packaged for at least six months under normal refrigeration conditions. Such a feature decreased the price of the vaccine and made it possible for many countries to obtain it.
AstraZeneca is a carrier vaccine, made from a modified variant of an adenovirus, in which the final product contains spike proteins found in SARS-Cov-2. The proteins penetrate the cells of the body, causing them to produce antibodies that defend against an actual SARS-Cov2 infection. Even though the manufacturing company said it was 90% effective, clinical trials later revealed that it was 76% effective against mild and moderate infections.
Which COVID-19 Vaccine Should You Take?
All three COVID vaccines are effective against severe illness and death at a 100 % rate, and all three are effective against mild and moderate infections at a variable rate. They are also safe, aside from a few rare, reported blood clots cases, we would advise you to take the vaccine that is most available to you and to notify your country’s ministry of health, in case you have any previous severe diseases or sensitivity against certain types of medicines.