Delivering a needle-free vaccine

The Australian-designed Nanopatch may revolutionise the way vaccines are administered in developing countries.

Mark Kendall loves to make things work. In his own words, he "just wants to do useful things".

After travelling to Papua New Guinea a few months ago, the young professor of biomedical engineering's determination to be useful took on greater meaning.

"I saw children there with diseases I had never seen [up close] before — HIV, malaria, TB, pneumonia," he explains. "There are vaccines