Myth: Vaccines are an artificial way of fighting a virus.
Busted: Your body's immune system does the fighting - vaccines just deliver the information it needs in advance so it can more effectively identify and fight off real viruses when they attack.
Vaccines are like a software update for your body's immune system.
In the case of COVID-19 vaccines, they very precisely code the SARS-CoV-2 spike protein, based on the genetic sequence of the SARS-CoV-2 virus.
Like other vaccines, they work to familiarise your immune system with the COVID-19 virus' appearance - without its harm - so that your body can mount a quicker immune response when you are infected and your body encounters the real virus.
This is especially important for people who have weakened immune systems, like those living with cancer.