"It's the news that Brits did not want to hear," says the Daily Star.
The "mutant" version of the "killer E. coli virus has reached our shores" and it could affect everyone, says the paper, not just the young and old.
The Daily Mail wonders if women could be at greater risk from infection - from following "bikini diets".
Infection rates are "particularly high" among young women, says the Mail, which could be because they are "more likely to eat salads than men".
Cool as cucumber
Some of the papers give a reality check on the E. coli outbreak.
"There is no evidence yet that the bacteria have appeared on British vegetables", says the Guardian.
The Daily Mirror says to "stay cool as a cucumber" and "avoid panicking" - because the seven victims so far in Britain were all infected in Germany.
The Financial Times focuses on the "trade spat" between the European Union and Russia, which has banned imports of vegetables from the EU.
The health of the Queen's horse, Carlton House, features on the back pages of several of the newspapers.
After suffering an injury scare earlier in the week, the favourite is set to run in the Derby at Epsom on Saturday.
The Times says, after the most alarming injury scare in recent racing history, Carlton House survived a breakfast canter on Newmarket Heath on Thursday.
If he wins, says the Daily Telegraph, "it will give racing its greatest fillip since the days of Red Rum".
The race to become the next chancellor of Cambridge University is highlighted the Times.
A couple of weeks ago, says the paper, the appointment of Lord Sainsbury of Turville "appeared to be a formality".
However, the Times has learned that he has a challenger - one Abdul Arain who is interviewed in the back of the shop he has been running for 15 years.
It says Mr Arain is "disgruntled" at plans to open a Sainsbury's store in the same street as his shop."