GASTROENTERITIS and diarrhoea caused by eating meat contaminated with common bacteria may soon be a thing of the past. A new Australian vaccine keeps common strains of salmonella out of cattle and poultry, and it is being developed further to protect cattle against two dangerous strains of
The vaccine is based on the work of Peter Coloe and his colleagues at the Royal Melbourne Institute of Technology, who have developed mutant strains of
Coloe's group created the salmonellas by deleting the gene for a key enzyme that normally helps to synthesise a compound essential for the bacterium's growth and reproduction. When administered to animals, the altered bacterium ...
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