dose

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The most important concerns with respect to this pathogen are that the infective dose is thought to be as low as 100 cells and that the organism is capable of growing at temperatures as low as 2[degrees]C.
Karen William, environmental health and trading standards committee chair, said, "This bacteria has a low infective dose which makes cross contamination all too easy, but the good news is that it is very susceptible to heat and cooking will kill it off.
They infective dose is around 10 organisms, whereas for something like salmonella it might be around a million.
HSE biological agents chief Mark Bale said: "People ought to be aware of how low the infective dose is.