Disease uncertainty in the First Fleet's colonial legacy

The founding of Australia brought catastrophic disease consequences for Aboriginal communities. There are disputes over whether a major outbreak was smallpox or chickenpox and whether it arrived with European settlers or through regional movement from places such as Indonesia. Mass mortality alone does not prove deliberate biological attack because previously separated populations can be extraordinarily vulnerable to unfamiliar infections. Comparisons with the Americas illustrate how imported diseases could destroy communities without colonizers possessing modern knowledge of transmission. The New South Wales Corps' documented corruption also falls short of the complex planning and medical understanding required for an intentional epidemic. The evidence supports the severity of the outcome, while the outbreak's identity, route, and intent remain uncertain.