During Canada’s centennial year, there were no deaths in the province of Prince Edward Island resulting from tuberculosis. This was a precedent setting achievement for the TB workers of PEI, as no other province had gone a full year without deaths from TB in the history of this country. Furthermore, it was exceptional that this province should be the first to pass this mark when PEI had previously held the title of highest TB death rate in Canada.

PEI had come a long way from 100 deaths per year reported in the early 1900s, thanks to the work of the PEI Tuberculosis League and the new antibiotics. With the success of the anti-tubercular drugs, and the subsequent reduction in TB deaths, the involvement of the PEI Tuberculosis League lessened and they became more concerned with respiratory diseases such as bronchitis, emphysema and lung cancer. By 1976, only one person had died on the island in the previous seven years and only 9 were being treated in institutions. In 1978, the sanatorium in PEI was free of TB sufferers for the first time, with the last patients being discharged to continue treatment at home.

Patients take rest on the balcony at Ninette San in Manitoba, during the "Sanatorium Age" of TB treatment.