Health care workers answer questions about the COVID-19 vaccines.
Janice Blanchard, MD, PhD explains what herd immunity is and how COVID vaccines protects us.
Herd immunity means that a certain percentage of people have antibodies to the virus, such that they protect those who don’t have antibodies.
You can get it either by getting the COVID, which is not a great way to get antibodies—you get really sick from the disease, or you can get it from having the vaccine.
They say that you need at least 70% of the population or “herd” to have antibodies to COVID in order for it to stop transmission of the disease and protect everyone.