The seed investment round was led by Cambridge Enterprise.
The effect was seen in restaurants, but not in bars.
Prof Jonathan Heeney, of the University of Cambridge and DIOSVax, explains the unique technology behind his approach.
Series held second event of Cambridge-made success stories before being put on hold due to coronavirus
Last event of annual showcase reveals society far slower adapting to climate change than to coronavirus
Organisers have cancelled the remainder of the programme to avoid inadvertently exposing visitors and staff to the risk of coronavirus.
Global pandemic could kill 50 million, says respected Cambridge virologist and broadcaster
The activities attract thousands of families every year.
This year the festival's theme is Vision, covering new technology, the environment and advances in healthcare - plus a few impressive explosions
Its work with colleagues in Newcastle and Ghent could lead to artificial thymus and better therapeutic T cells.
