Three COVID Vaccines Compared: Pfizer Vs Moderna Vs AstraZeneca

1242 okunma — 30 June 2023 06:30

Sarah Cooper

Coronavirus vaccine: Pfizer, Moderna and Astrazeneca, which is the better COVID-19 vaccine right now? Here’s what you need to know about the three leading coronavirus vaccine vaccines… Two vaccines could be approved for use in the United States by the end of next week, with the third coming soon. Here’s a closer look at all three and what they can mean for you. This article was last updated on December 23, 2020.

Pfizer Vs Moderna Vs AstraZeneca

Vaccine developer:	Pfizer	modern	AstraZeneca
How does it work	Messenger RNA	Messenger RNA	inactive cold virus
When approved / approved	December 11	Advisory committee meeting on 17 December; confirmation expected after 24 to 48 hours	Has not applied for emergency use authorization in the US
What percentage of people did it protect from getting an infection in clinical trials?	95%	94.1%	70%
How many doses do you need?	two doses average 3 weeks	2 doses average 4 weeks	Two doses in a month
What are the side effects?	Fatigue, headache, chills, muscle pain, especially after the second dose	Fever, muscle aches, headaches lasting several days. More bad effects after the second dose.	Not yet known
How many doses will be available and when?	50 million as of December 18; 1.3 billion in 2021	20 million as of December 21; 80 million for the USA in 2021	3 billion planned for 2021
Who is it recommended for?	People aged 16 and over	Persons aged 18 and over.	Not suitable yet.
What about pregnant women and nursing mothers?	Experts say that pregnant women or nursing mothers who want the COVID-19 vaccine should get vaccinated. The vaccine has not now been studied in pregnant women. Read the guidelines here.	There is limited information. Studies in rats vaccinated before and during pregnancy found no safety concerns. The CDC says pregnant women can choose to get vaccinated.	Not suitable yet.
Is there anyone who should not get vaccinated?	Persons with a history of serious allergic reactions. There is not enough information to advise individuals with weakened immune systems.	Not suitable yet.	Not suitable yet.
Are there any significant side effects?	The CDC detected 6 episodes of anaphylaxis in individuals who received the vaccine. Four events of Bell’s palsy, one type of discontinuous facial palsy, were reported in individuals receiving the vaccine, with no events in the placebo cluster. But this is not more than expected in the general population.	Four events of Bell’s palsy were reported in clinical trials, 3 in the vaccine cluster and 1 in the placebo cluster. But this is not more than expected in the general population.	Not suitable yet.
What about people with low immune function?	People whose immune function has been reduced by HIV or immunosuppressive drugs may receive the COVID 19 vaccines unless they have other reasons to avoid the vaccine. This set has finite safety data. The vaccine may not work either. Individuals with weakened immunity should continue to take all recommended safety precautions after vaccination.COVID 19	Individuals whose immune function has been reduced by HIV or immunosuppressive drugs may receive the COVID vaccines unless they have other reasons to avoid the vaccine. There is limited safety data in this cluster. The vaccine may not work either. Individuals with weakened immunity should continue to take all recommended safety precautions after vaccination.	Not suitable yet.
What about people with autoimmune diseases?	No information is available on the safety or effectiveness of mRNA vaccines in individuals with autoimmune diseases. Individuals with autoimmune conditions may still be vaccinated unless they have other reasons to avoid the vaccine.	No data are available on the safety or effectiveness of mRNA vaccines in individuals with autoimmune diseases. People with autoimmune conditions can still get the vaccine unless they have other reasons to avoid it.	Not suitable yet.
Is the vaccine safe for individuals with a history of Guillain-Barre Syndrome (GBS)?	To date, no GBS events have been observed in individuals vaccinated for COVID-19. The CDC says a history of GBS is not a reason to avoid vaccination.	To date, there have been no cases of GBS in individuals vaccinated for the coronavirus. The CDC says a history of GBS is not a reason to avoid vaccination.	Not yet available

Three COVID Vaccines Compared: Pfizer Vs Moderna Vs AstraZeneca

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