Jeane Freeman said Scotland should hit its target of vaccinating 400,000 adults a week ahead of schedule this week - but added the programme will then “need to scale back a bit”.A drop in supply across all four UK nations is being caused by work being carried out by Pfizer – the manufacturer of one of the approved vaccines.The company is having to temporarily reduce output as part of an overall effort to increase manufacturing capacity amid worldwide demand for vaccines.Nicola Sturgeon said on