Comparing Three Major Vaccines of Coronavirus

Initially two vaccines from Pfizer and Moderna have been approved by USA in the beginning of December, 2020. Later on, AstraZeneca vaccine has been approved by UK also for emergency uses also. Here, you may want to know what the difference between these three vaccines is and which one is more effective.


On 11th December, the vaccine has been approved by USA. Later on, World Health Organization has given their nod to the vaccine also. RNA of the virus is targeted on the occasion for the purpose of cure. According to the clinical studies, scientists have said that the vaccine is about 95% effective. Two doses of this vaccine may be required that must be administered with a gap of three weeks. Side effects such as headache, muscle pain and chills can be experienced with this vaccine after the second dose mainly. In the beginning of 2021, 1.3 millions vaccines may be made available to the public for the use. The vaccine has been recommended for people who are 16 years and above. Studies have not been done on the pregnant women till now. Therefore, efficacy cannot be told clearly. If a person suffers from serious allergic reaction then he or she should stay away from the vaccine. 6 cases of Anaphalaxis and 4 cases of Bell’s palsy have been seen during the trials.


Similar to Pfizer vaccine, Moderna vaccine also creates an effect on RNA. Just after Pfizer, Moderna has been approved on 18th December. Efficacy of the vaccine is about 94.1%. Two doses of vaccines have to be taken with a gap of 4 weeks. Headache, fever, muscle pain can be seen as the side effects for few days. Following to the second dose, further side effects can be experienced. 80 million doses are available for use in USA. People older than 18 years can use the vaccine. Trials have been run on rat before and during the pregnancy. Ill effects have not been found on the occasion. Therefore, pregnant ladies are eligible for this vaccine. People suffering from allergic reaction should not take the vaccine. Some cases of Ball’s palsy have been found after trial.


One of the latest vaccines is to get approval on 30th December 2020. Inactive cold virus is impacted here. Unlike previous two vaccines, AstraZeneca vaccine has able to protect 70% people during the trials. Two doses of vaccines must be administered in a gap of 4 to 12 weeks. Severe side effects have not been seen even after second dose of this vaccine. 3 million vaccines may be available in the beginning of 2021. Not much about the vaccine has been revealed yet.

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