Now, Vaccines That You Can Eat!

Marshall and his team will apply for approval to trial their first edible vaccine containing a bug with a flu vaccines attached to it within a year. 

Australian scientists are moving closer towards developing a revolutionary 'needle-free' vaccine, which could be swallowed with food rather than being injected.
Clinical trials led by Nobel Prize winner Dr Barry Marshall have identified certain strains of stomach bacteria, which are safe to use in humans as the basis for edible vaccines.

"The next step is to submit this data with an application to government bodies like the TGA (Therapeutic Goods Administration) and FDA (Food and Drug Administration) in the US, perhaps, for the next study which would be to put a vaccine into bacteria we have chosen to show we can vaccinate somebody," News.com.au quoted Marshall as saying.
"The next trial will not be a giant study but it may be 30-100 participants," he said.
For the recent trials, Marshall's team of 15 scientists at his biotech company Ondek carried out tests on a group of 30 people in Perth.
They injected five strains of the bacteria Helicobacter pylori - a cancer-causing stomach bug- into five groups of six participants to find out if they would cause any side effects.
The bugs were collected from elderly people in Sweden who had carried the bugs all their lives but never showed any symptoms.
The bugs easily infected the trial participants, who suffered none or only minor side effects such as occasional stomach upsets.