When the cholera outbreak started in Haiti, health agencies briefly contemplated using vaccines to try to curb it But they abandoned the idea once it became clear that the available global production was completely insufficient for an effective vaccination campaign - oniy a few hundred thousand doses would have been available, and even these would have taken weeks to manufacture, whereas millions of doses were needed.rnOnly one cholera vaccine - Dukoral - is approved by the World Health Organization (WHO). Made by the smalt Dutch company Crucell, based in Leiden, it is aimed at people travelling to cholera-endemic areas, and as such is too expensive to be widely deployed in the developing world. A second vaccine called Shanchol, already licensed in India, is currently going through the WHO's approval process.
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