The Covid-19 protein subunit vaccine is a type of vaccine that uses pieces of the virus, called antigens, to trigger an immune response in the body. The vaccine is made from inactive or inactivated pieces of the virus, which means it can’t cause an infection. The vaccine works by creating antibodies that help the body recognize and fight the virus if it is encountered again in the future. It is the most common type of vaccine used to prevent infection from the Covid-19 virus.
A COVID-19 protein subunit vaccine is a type of vaccine that uses harmless copies of a specific protein, the spike protein, from the SARS-CoV-2 virus. The spike protein is the part of the virus that attaches to human cells, and by training the body to recognize this protein, the immune system can learn to fight off the actual virus if it encounters it later.
Protein subunit vaccines are a safe and effective way to prevent infectious diseases. They have been used for many years to vaccinate against diseases such as hepatitis B, shingles, and influenza. COVID-19 protein subunit vaccines are one type of vaccine that has been developed to help protect against COVID-19.
Here are some of the advantages of protein subunit vaccines:
- They are safe. Because they do not contain the live virus, they cannot cause COVID-19 infection.
- They are effective. Protein subunit vaccines have been shown to be effective in preventing COVID-19 infection.
- They are well-tolerated. Protein subunit vaccines typically cause mild side effects, such as pain at the injection site, fatigue, and headache.
- They can be stable and easy to store.
One example of a COVID-19 protein subunit vaccine is Novavax which was authorized for emergency use by the WHO in December 2021.