Some vaccination critics have been making false claims about the Australian Covid vaccines extent of adverse effects. Doing so may be a crime, and in any case discredits the proponent. Better to keep to the facts. For the US, which has had a more aggressive vaccination program than Australia, arguably, let us keep to the official material from the Centers for Disease Control and Prevention (CDC). Surely, no problem there.
https://www.naturalnews.com/2021-06-03-cdc-reports-more-breakthrough-coronavirus-infections.html