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Tier 1, tier 2, tier 3? Victoria's COVID exposure sites explained

By Meru Sheel, Epidemiologist | Senior Research Fellow, Australian National University
Charlee J Law, Epidemiologist | Research Associate, Australian National University
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During the current COVID outbreak in Melbourne, the state government has been listing exposure sites as tier 1, tier 2, or tier 3. So what's the difference between each level, and why does it matter?

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