Covid-19 Vaccine Comparison: Which coronavirus Vaccine is better?

Covid-19 vaccine comparison. This article compares the different coronavirus vaccines, details their effectiveness, and explains the difference between Covid-19 vaccines.

All vaccines that have been developed against COVID-19 — and those in the process of development — aim to have a positive effect on people if they become infected; that is, they aim to prevent severe infection, hospitalization, and death.

This objective is achieved by all vaccines that have been approved, from Pfizer’s most well-known for being the first, to AstraZeneca’s, through the Russian Sputnik, or the Chinese Sinovac. As per information from the World Health Organization (WHO), those who get vaccinated have a lower likelihood of having COVID-19, and if they are infected, the effects will be mild.

By vaccinating the entire population, we enhance the chance of achieving herd immunity, which would provide a hedge against the spread of this pandemic in the medium to long term. Then, yes, we can return to a normal life. This is why vaccination of the majority of the population with any of the authorized vaccines is so important.

We want to explain why there is so much debate about the effectiveness of various vaccines. What are the differences between vaccines?

Also Read: Coronavirus Vaccines: How it works and side effects

Effectiveness of Different Vaccines:

Johnson & Johnson stated that their vaccine is 67% effective, which many consider a relatively low percentage, but it is important to explain the relativeness of such a figure.

In order to give the percentage of efficacy, it is important to note that the percentage of effectiveness is relative in relation to the number of people who can get sick as a result of vaccination, and not the potential for people to get sick even after vaccination.

A vaccine will likely be ineffective if it was trialed during a spike in infections, particularly if the vaccine was tested in the UK at the time of the spike. This is because the viral load increased, as well as the risk of infection.

But, other than that, a vaccine’s main objective is not to prevent entire infections but rather to prevent transmission from one person to another and to prevent hospitalization and death caused by the infection.

With COVID-19, there are numerous scenarios for individuals who are infected, from no symptoms to death. However, a population who has received the vaccine can expect to experience a wide range of severity with the disease.

There were no hospitalizations or deaths when COVID-19 infected someone who had previously been vaccinated and followed by all vaccinations.

The next step is to vaccinate most people to create herd immunity that prevents outbreaks and pandemics.

This is why each vaccine represents a step towards ending the COVID-19 pandemic. Here we compare coronavirus vaccines. What are the differences between covid-19 vaccines? Read and find the effectiveness of each covid-19 vaccine.

Also read: When will the COVID-19 pandemic end?

Covid-19 Vaccines Comparison:

We gather some information about the vaccines that circulate in the world today. They include brands such as Pfizer, AstraZeneca, Sputnik, and Sinovac. What are the differences between covid-19 vaccines?

1. Pfizer-BioNTech

This vaccine has been distributed in at least 74 countries. Perhaps the biggest issue with this vaccine is that it needs to be kept under high refrigeration.

2. Modern

This vaccine has been distributed in 33 countries. As a result, despite its type, its temperature does not need to be as low as the Pfizer, so its handling is simpler, though it still needs to be at minus 20 degrees Celsius.

3. Oxford-AstraZeneca

The vaccine, which has been distributed in 61 countries, can be kept at just a few degrees Celsius in a normal refrigerator, which makes it easy to maintain. It does not require the deployment of a logistic device to maintain the cold chain during its distribution. The vaccination was suspended in some countries after cases of coagulation were reported, but it was later clarified that these cases were minimal and the vaccination was reactivated. If you still have any questions, consult your doctor.

4. Sputnik V

Despite initial rumors about low effectiveness, the prestigious British medical publication The Lancet later published an analysis showing the vaccine’s effectiveness. Russia has distributed this vaccine in 16 countries and requires normal refrigeration.

5. Johnson & Johnson

Only four countries are currently using this vaccine. Its single dose and the requirement that it be stored between 2–8 degrees Celsius make the vaccine maintenance, distribution, and application cost-effective, faster, and more efficient.

6. CanSino

These Chinese-made vaccines do not require high refrigeration, and in addition to that, the pharmaceutical company has been testing their application via nasal spray as well as an intramuscular injection.

7. Sinopharm

The Chinese vaccine can be stored for two years in ordinary cooling without losing its properties, so it is suitable for pragmatist handling, distribution, and storage.

8. Sinovac / CoronaVac

One of the main advantages of this vaccine is that it maintains its stability and can be kept in a refrigerator for up to three years without losing its properties. The product stands up well to temperatures below 25 degrees Celsius for 42 days, making it an excellent option for countries lacking an adequate cold chain.

9: Covaxin

A vaccine developed in India provides the main advantage of neutralizing the British COVID-19 strain, according to preliminary studies.

10. NovaVax

• Efficacy: 89% after 7 days of application.
• Type: Protein subunits.

They are adopting a new version for the variants and have achieved efficacy of 96% against the original coronavirus, but 50% against the new variant originating in South Africa and the vaccine is currently in the testing phase of its third phase.

11. EpiVAcCrown.

The Russian government assures that this vaccine is 100 percent effective, but the results of its effects have not yet been collected. More information on this vaccine will be available in May.

Originally published at https://everydayscience.blog on April 2, 2021.