After the Strategic advisory group of experts on immunization (SAGE) from the World health organization (WHO) reviewed the Pfizer vaccine. It is find to be safe. Including the performance is good
What is the COVID Pfizer vaccine?
The COVID-19 vaccine Pfizer, formally known as BNT162b2. It is an mRNA-base vaccine develop by Pfizer and German company BioNTech.
The mRNA vaccine is a genetic synthesis that mimics the virus. Therefore, the vaccine does not contain viral particles. or dead bacteria inside at all
When mRNA is inject into the body Stimulates the production of Spike protein, like the corona virus. Which is the part that causes the infection until covid 19. When the body sees the protein thorns of the virus Therefore. It can create immunity to really protect against viruses. to be able to enter
The Pfizer vaccine is approve for emergency use by the Food and Drug Administration (FDA) to prevent COVID-19 for people 12 years and older.
Pfizer vaccine How is the efficiency?
After the second dose of Pfizer vaccination, it is up to 91.3% effective in preventing COVID-19 from 7 days to 6 months after injection.
Additionally, the US Centers for Disease Control and Prevention (CDC) requires the Pfizer vaccine to be 100% effective in preventing the severity of the disease caused by COVID-19.
While the U.S. Food and Drug Administration (FDA) specifies the effectiveness of preventing severe symptoms caused by COVID-19 at 95.3 percent.
But at present, there is not enough information to confirm that. After receiving the Pfizer vaccine, how likely is it to spread the virus to others? Within 10 days after the first dose of Pfizer vaccination. May still be able to spread the infection Because the body is unable to produce antibodies (Antibodies) fully.
Therefore, they should continue to follow public health measures such as wearing a mask when going out in public. distance from other people Wash your hands after handling things. Avoid crowded places. If it is necessary to enter a place with other people Ventilation windows should be open to reduce the spread of infection.
However, vaccine efficacy is measure in clinical trials. which may be control in the experimental group but in applying it to the real population. The efficacy is likely to be inferior to the results conclude in the experiment due to factors such as new virus mutations. that have not yet been use in the experiment
Pfizer vaccine Can you prevent the new strain of covid?
Pfizer’s website reveals that the Pfizer vaccine is 100% effective in preventing the coronavirus in South Africa. The place where the B.1.351 species was first found
In addition, another study found that people who received two full doses of it were 90% less likely to contract the first strain of COVID-19 in the UK, or B.1.1.7 .
However, the available data still needs long-term observation and development.
How is the Pfizer vaccine inject?
The Pfizer vaccine is administer in two doses, with the second dose being 21-28 days away from the first dose, using an intramuscular injection in the upper arm. Immunity will begin 12 days after the Pfizer vaccination, but will be fully active after 2 doses.
At present, more studies are need to determine the long-term protective efficacy in the case of a single injection of the first dose.