- Pfizer says COVID-19 vaccine more than 90 per cent effective in kids 9News
- Pfizer says Covid vaccine 90% effective in younger children NEWS.com.au
- Covid-19 vaccine rush to boost immunity of at-risk workers The Australian
- Mix-and-match Covid vaccine boosters are here — How to choose the best one for you CNBC
- An infectious disease expert explains new federal rules on 'mix-and-match' vaccine booster shots The Conversation US
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