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Published online 10 January 2005 | Nature | doi:10.1038/news050110-3
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Caution raised over SARS vaccine
Jab against one strain might worsen infection with others.
A cautionary note has been sounded for those developing vaccines against severe acute respiratory syndrome (SARS). Some vaccines could prove useless against certain strains, or even worsen the infection, a preliminary study suggests.
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