Queensland researchers say a published study contains ‘silly mistake’ that over-inflates vaccine’s efficacy, but the regulator is standing by decision to approve it At wildlife hospitals across eastern Australia, many koalas brought in have distinctive brown patches on their bottoms – a sign of u...

Source: [Guardian Environment](https://www.theguardian.com/environment/2026/oct/26/koalas-australia-chlamydia-vaccine)

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