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In page Sydney Hospital:

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Many of the 736 convicts who survived the voyage of the First Fleet from Portsmouth, England arrived suffering from dysentery, smallpox, scurvy, and typhoid. Soon after landing Governor Phillip and Surgeon-General John White established a tent hospital along what is now George Street in The Rocks to care for the worst cases. Subsequent convict boatloads had even higher rates of death and disease. A portable hospital which was prefabricated in England from wood and copper arrived in Sydney with the Second Fleet in 1790. Present-day Nurses Walk in The Rocks cuts across where the site of the early hospital once was. John White was Surgeon-General at Sydney Cove between 1788 and 1794.