Would you spend 25 years trying to make a TB vaccine? Professor Warwick Britton has

Both Professor Warwick Britton and Dr Daniel Fernández-Ruiz are working on vaccine 'long shots'.
Rachel Fieldhouse
Professor Warwick Britton.

Emeritus Professor Warwick Britton has spent a quarter of a century trying to make an inhaled TB vaccine work.

So you may be unsurprised to hear that the Sydney immunologist describes himself as an optimist.