Annette Kellerman (multiple world record swimmer, vaudeville artiste, star of the first film to cost US$1m and arrested in Boston for public indecency for wearing a swimming costume) was born in Australia with what infectious disease, now eradicated thanks to a vaccine?

She was born with Polio (Poliomyelitis).

Born on July 6, 1886, in Sydney, Australia, Annette Kellerman is said to have suffered from bowleggedness as a child, supposedly as a result of having been encouraged to walk too early. By age nine, she had been taught to swim as a therapeutic means of overcoming this condition. It now appears from Australian sources that her childhood ailment was actually a case of Poliomyelitis that had left her partially crippled, and that the braces she wore and the swimming lessons she took were designed to correct the results of this disease. On the other hand, there is no truth to the exaggerated stories that occasionally appeared in the press, that she was declared "a hopeless cripple" as a child, that she was forced to wear "an iron brace up to her hips," that the calisthenics required of her were "pure torture," or that at the age of five she was forced to swim by her father even though she was "deathly afraid of the water." Whatever the exact degree of her condition, her legs were normal by the time she was 13, and she was soon swimming first one, then two, then ten miles at a stretch.

https://www.encyclopedia.com/women/encyclopedias-almanacs-transcripts-and-maps/kellerman-annette-1886-1975

Thanks for that particularly comprehensive reference @elburcher. I've not come across that before but it cements why Ms Kellerman should be ranked as one of the greatest sports persons Australia has produced.

Sadly, I must note that polio is not completely eradicated. It was considered eliminated in North and South America in the 1990s, but persisted in other parts of the world (especially Nigeria, Pakistan and Afghanistan), and a tendency to complacency over its supposed eradication has led an increasing number of people to decide that the (small, but real) risks associated with vaccination have become more significant than the risk of acquiring polio. As a consequence, outbreaks have started to appear even in areas where it had been considered to be no longer a risk. They remain confined, due to the widespread uptake of vaccines that still persists, but epidemiologists consider the disease still a potential threat.

https://www.poliohealth.org.au/polio-epidemics/