Quay thử miền nam hôm nayBased on research, it is likely that COVID-19 vaccines will prevent people from getting and spreading the virus. The research studies for the Moderna vaccine showed the vaccine prevented COVID-19 in about 95 out of 100 people and severe COVID-19 in 100 out of 100 people.
The research so far shows that the vaccine is safe and effective.
We think that having COVID-19 may protect you from getting it again, but we are unsure how long. Some patients have had COVID-19 more than once. It is recommended that people who have had COVID-19 still get the vaccine.
It is too soon to know how long a vaccine will last. It is currently being researched. Of the people who have received the vaccine, we know that they have been protected from COVID-19 for at least 4 months.
Both vaccines use tiny parts called messenger RNA (mRNA) carried in very tiny lipid parts. The two vaccines differ in the way the mRNA is built or the way the lipids are used. The two vaccines are also stored in different ways.
Quay thử miền nam hôm nayThe COVID-19 vaccines prevent or lessen illness from the coronavirus. Both the Pfizer-BioNTech and Moderna vaccines have mRNA, which make the virus’ spike protein. This protein lets the virus attach to cells in our body. When we get the vaccine, we develop antibodies to the spike protein. This stops the virus from attaching to cells when exposed to the virus. Other parts of the body that prevent infection are made active by the vaccines to protect against future COVID-19 infection.
Vaccines for COVID-19 will start out being used under an Emergency Use Authorization (EUA) by the FDA. An EUA makes the vaccine available for public health emergencies. It means that the vaccine is available outside of a research study but is not yet approved. This is the usual first step for a new vaccine. The vaccine can continue to be used as long as people benefit from it. The research continues as it moves toward full approval.
The studies of vaccines included people ages 18 through 85 years old. It worked well for all ages. Studies are needed for people younger than 18 and pregnant women. More studies are going on or being planned.
Yes, it is especially important for older adults to get the vaccine because they have the highest risk of being very sick or dying from COVID-19.
Studies show that both vaccines are likely safe and will work for almost everyone. However, they cannot yet be used for children or pregnant women because those studies are not done.
Yes, some people can get COVID-19 again. It is also not known how long someone is protected from getting the virus again.