Coronavirus transmission rates in Scotland have risen above 1 following a surge in cases, Nicola Sturgeon has said.
The Scottish First Minister said the reproduction rate of the virus, which calculates how many people are infected by each positive case, could be as high as 1.4.
The so-called R rate was believed to be below 1 for some months in Scotland but Ms Sturgeon said it has risen on Thursday.
Scientists believe this is the threshold where coronavirus begins to spread more rapidly in the community.
Ms Sturgeon told a daily briefing: "I said recently that the R number is of slightly less concern when overall prevalence of the virus is low, and overall prevalence of the virus is still low in Scotland right now.
"But nevertheless this is a reminder that the virus is spreading again here, just as it is elsewhere in the UK, across Europe and indeed in the wider world, so it is a reminder of the need for us to take this seriously and do all of the right things."
Some 101 new cases in Scotland have been confirmed in Scotland, with 53 in Greater Glasgow and Clyde area, which has been subject to local restrictions following a surge in cases.
Indoor meetings were banned in the area, including East Renfrewshire and West Dunbartonshire.
But pubs and hospitality venues have been allowed to remain open - prompting some criticism from people from Aberdeen where much stricter restrictions were brought in to cope with an outbreak in the city.
Pubs across Aberdeen were closed last month and travel restrictions imposed.
But Ms Sturgeon said Government data had shown the rise in the number of cases in Glasgow was caused by indoor social gatherings.
The SNP leader, who lives in Glasgow, said she had been forced to cancel plans to see her family this weekend.
At the briefing, she said: "I totally get the frustration of this.
"I live in Glasgow, I was looking forward to seeing my mum and dad at the weekend for the first time - my mother could probably tell you the exact number of days - in well over a month.
"I was hoping to see them this weekend. I won't be able to do that, because they can't come to my house and, even though they don't live in the affected area, I can't go to their house.
"I'm not immune from living under these restrictions, I know how difficult it is and I know how frustrating it is, so I share that view.
"But equally, I know how damaging it will be if we don't take the necessary action to try to stem this spread before it becomes worse and we have to impose even stricter restrictions."
