Symptoms see tummy cramps, diarrhoea, vomiting oregon fever. These usually make betwixt 12 and 72 hours aft becoming infected.
Anyone who is acrophobic should interaction their GP oregon retired of hours work successful the archetypal instance, says the UKHSA.
Most cases - 199 of the 207 - person been successful England, including 47 successful London and 38 successful Yorkshire and Humber.
Hannah Charles, pb epidemiologist for gastrointestinal infections astatine UKHSA, said: "We're moving with Food Standards Agency and different nationalist wellness agencies to analyse a salmonella outbreak that whitethorn beryllium linked to eggs imported from extracurricular of the UK."
Salmonella tin beryllium recovered successful a fig of nutrient sources including earthy oregon under-cooked poultry oregon nutrient and eggs.
Preparing and cooking nutrient thoroughly tin forestall infection, arsenic good arsenic washing your hands aft utilizing the bath and earlier handling food.
Thousands of cases nutrient poisoning hap each twelvemonth successful the UK caused by tons of antithetic strains of salmonella.
It is much antithetic to spot an outbreak similar this linked to 1 circumstantial stain of the bacterium affecting galore radical astatine 1 time.
The UKHSA says "extensive" epidemiological and nutrient concatenation investigations are ongoing to place the root but that ovum depletion remains the strongest to date.
Some of the nutrient businesses linked to 24 of the cases usage imported eggs.
"At this clip determination is nary identified nexus to UK-produced eggs oregon poultry," says the UKHSA.
Any other precautions oregon preventative measures volition beryllium implemented if needed, it says. The hazard to the wide nationalist is low.
Jacquelyn McCormick, Head of Incidents astatine the Food Standards Agency, said eggs which are thoroughly cooked and handled hygienically should not contiguous a nutrient information risk.
She advised: "Infants, young children, large radical and older adults should lone devour runny oregon earthy eggs if they person a British Lion people oregon are produced nether the Laid successful Britain ovum assurance scheme."
People handling eggs, eggshells oregon ovum packaging should lavation their hands thoroughly with soap and water, she added.
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