A spokesman for the Foreign and Commonwealth Office said security would be increased for tonight's tie.
We are aware of a serious incident involving British nationals in Rome.
We are in contact with the Italian authorities and the Italian police, who are investigating the incident and have confirmed there will be increased security measures for the game this evening.
We have been in contact with one British national and have been updated by hospitals on the conditions of all the others, some of whom have already been released.
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Consumer groups say the presence of campylobacter's in so much supermarket chicken should shame Britain's biggest grocery chains.
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Latest tests on fresh chicken being sold at major supermarkets show contamination of campylobacter has increased.