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The first minister says the Scottish parliament will debate and vote tomorrow on the principle of a "limited, targeted and proportionate" system of vaccine certification.

The government will publish a paper setting out in broad terms how the scheme will operate, she says.

Scotland is far from alone in considering such a scheme, Ms Sturgeon says, and similar schemes have already been introduced in several countries across Europe.

In the Scottish government's view, Covid certification "is a reasonable response to a very difficult situation, and much more proportionate than any likely alternatives", she says.

It will help reduce the overall harms caused by the pandemic, reduce transmission in some higher-risk settings, and maximise protection against serious illness, the FM adds.

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The Scottish government is also still awaiting further advice from the JCVI on a booster programme of vaccinations for people with certain health conditions, the first minister says.

Two doses may not be sufficient to enable those with compromised immune systems to mount a full immune response to Covid, she says.

"We are now moving to implement this advice over the next few weeks and we will provide further advice to those affected by it shortly," Ms Sturgeon adds.

The same applies for a more general booster programme, she says.

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The first minister addresses the issue of vaccination for 12 to 15-year-olds, pointing to updated analysis from the JCVI last Friday.

She says the JCVI concluded that the health benefit of vaccinating that group does marginally outweigh any risks.

But because it considers children to be at relatively lower risk of serious health harm from the virus, at this stage it has decided not to recommend vaccination is offered all 12 to 15-year-olds.

But in considering the likelihood of reducing disruption to education, the chief medical officers of the four UK governments will undertake a "rapid assessment of the latest evidence", the FM says.

She expects that "within days", she adds, and the Scottish government will then act in accordance with any recommendations received.