At first, it was thought that 21,000 contaminated eggs had reached the United Kingdom from Dutch farms implicated in a contamination scare.
The UK food watchdog said about 700,000 eggs had been sent to the country from potentially contaminated Dutch farms, up from an earlier estimate of 21,000.
Foods containing egg have been recalled from supermarkets, although some of the affected eggs may have already made their way into the food chain.
With the contaminated eggs starting to surface in countries across Europe, Dutch and Belgian officials are facing growing questions about how the scandal started and whether the public has been kept fully aware.
The Public Health Lab, she added, is also in contact with other accredited foreign laboratories for the analysis of local and imported eggs for the presence of a toxic pesticide.
Real Madrid wouldn't sell Ronaldo for his weight in gold, says Perez
"But I think that if he plays tomorrow, it is probably the best confirmation that they'll keep counting on him during the season".
There is no evidence any British eggs have been contaminated but testing on United Kingdom farms are underway.
The Foods Standards Agency said 700,000 eggs had been sent to the United Kingdom from potentially contaminated Dutch farms.
Four UK supermarkets withdrew products from their shelves on Thursday after it emerged that 700,000 eggs from Dutch farms had been distributed to Britain.
Fipronil is classed by the World Health Organisation as a Class II moderately hazardous pesticide.
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Perhaps the reason for that is we have a Tony Pulis side on show, and he's generally regarded as a defensive-minded manager. In the US , our National team plays in the Gold Cup every two years and if they qualify, in the World Cup every four years.
Some 15 countries in Europe have said they have found eggs containing traces of insecticide, as well as Hong Kong and Switzerland.
Traceability on the eggs from the Netherlands contaminated with fipronil is continuing, according to the Food Safety Authority of Ireland (FSAI). So far, no one has reported falling sick from the tainted eggs.
The British Egg Industry Council said consumers concerned about the safety of their food should look for British Lion eggs.
Traceability on the eggs from the Netherlands contaminated with Fipronil is continuing, while an emergency European Union summit has been called for September.
Around 85% of eggs consumed in Britain are laid in the UK.
Ronald Koeman: Everton improvement is impossible in Premier League this year
They have brought in Kurt Zouma on loan and Darren Fletcher but they look weaker heading into this campaign. Stoke's only Premier League opening day victory came in 2009, seeing off newly promoted Burnley (D3 L5).
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