Diseases That Devastated Aboriginal Australians After European Contact

Catastrophic Impact of Introduced Diseases

When Europeans arrived in late 18th century, they brought infectious diseases to which Aboriginal Australians had no immunity, causing massive population decline and profound social disruption.

Major Diseases

• Smallpox: Most catastrophic; mortality up to 50%; spread via respiratory droplets and contact.
• Measles: Highly contagious; fever, cough, rash; significant fatalities pre-vaccination.
• Tuberculosis: Devastating due to living conditions and limited healthcare access.
• Influenza: Severe impact on vulnerable populations.
• Gonorrhea & Syphilis: Sexually transmitted infections introduced by settlers.

These diseases, combined with displacement and cultural disruption, caused tragic demographic collapse and lasting trauma for Aboriginal communities.