After ophthalmologist Norman Gregg and others had suggested a link, the Australian statistician Oliver Lancaster was able to show that at the 1911, 1921 and 1933 Australian censuses there were peaks in the age distributions of deaf people, corresponding to a cohort born around 1899, when there was a known epidemic of rubella.
Lancaster also made an important discovery about sunlight and skin cancer .
Lancaster, H. O. (1951) Deafness as an epidemic disease in Australia. British Medical Journal , 2 : 1429-1432.