How long does immunity last after COVID vaccination? Do we need booster shots? 2 immunology experts explain

  • Written by: Vasso Apostolopoulos, Professor of Immunology and Associate Provost, Research Partnerships, Victoria University
Gloved hands prepare a Pfizer vaccine.

An important factor in achieving herd immunity against SARS-CoV-2 (the virus that causes COVID-19) is is how long the vaccines protect you.

If a vaccine continues to work well over a long period, it becomes easier to have a significant proportion of the population optimally protected, and in turn suppress or eliminate the disease entirely.

As the...

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