Glasgow coronavirus cases connected to pubs have risen since rules banning visits to other people's homes were reintroduced, according to NHS bosses.
NHS Greater Glasgow and Clyde said that although there were no major outbreaks, the numbers of positive tests were on the up in the city's hospitality sector.
Lockdown restrictions on household visits across Glasgow and other western parts of Scotland were continued for a further week on Monday, having first been introduced on September 1.
Dr Linda de Caestecker, NHS GGC director of public health, said: "We are seeing increased number of cases in this area, often due to house parties but some also relate to visits to bars and restaurants.
"Nobody wants to see pubs and restaurants have to close down again.
"When we examine the rate per 100,000 population it is highest in West Dunbartonshire where many cases relate to family gatherings and parties.
"The next highest rate is in Glasgow City where more cases are associated with visits to bars and restaurants.
"Only the Inverclyde rate is remaining relatively low at present."
The health board later clarified that there were more cases from pubs in Glasgow than previously, meaning increasing numbers linked to such premises but "not a major outbreak".
Scottish First Minister Nicola Sturgeon said on Monday that evidence pointed to transmission taking place mostly between different homes, but an eye will be kept on the hospitality sector across the west of Scotland.
Restrictions on household visits - unless under exceptional circumstances - cover Glasgow, East Renfrewshire, West Dunbartonshire, East Dunbartonshire and Renfrewshire.
The measures also mean indoor visits to hospitals and care homes will be limited to essential visits only to protect the most vulnerable.
Restrictions will be reviewed every seven days in discussion with local partners.
