There continues to be no new confirmed cases of E coli O157 related to the Paisley outbreak.
A 72 year-old man is serious but stable at the Victoria Infirmary, an 81 year-old woman is improving at the Royal Alexandra Hospital in Paisley and a 70 year-old Paisley woman remains stable in hospital in the Republic of Ireland.
The other five individuals affected continue to recover well at home.
Dr Syed Ahmed, Chair of the Outbreak Control Team, said: "As part of our detailed investigations the Outbreak Control Team is investigating a number of confirmed E coli O157 cases in Scotland and England to establish if there is a link to the Paisley outbreak. So far none of these cases have been linked to the outbreak.
"Work to identify the source of the outbreak continues to be a top priority. Public Health Officials and Environmental Health Officers have been working closely with Morrisons who have been making every effort to support our investigation."
While there is still no conclusive evidence, we believe that cold cooked meats from Morrison's Lonend and Falside Road branches are still the most likely vehicles of infection and no other food, from Morrison's or elsewhere, has been implicated so far.
Anyone who has consumed sliced cold meats through either of the deli's, customer cafes or the purchase of ham sandwiches from the Lonend branch up until the point when Morrisons agreed to cease selling cold meats from the two deli counters and who is experiencing symptoms including stomach cramps, diarrhoea (often bloody), nausea and fever should contact a GP or NHS 24 (08454 242424).
The Outbreak Control team will meet again on Wednesday morning (22nd August), after which a further update will be issued.