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Professor hails Pfizer Covid-19 vaccine but warns of logistical problems for some countries

Professor Gordon Dougan Cambridge University says that he is absolutely delighted with the news that pharmaceutical giant Pfizer's vaccine has been found to be more than 90% effective within initial findings. However, Professor Dougan also recognises that the vaccine's requirement to be kept -70 degree Celsius will pose logistical problems for less wealthy countries.

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