By Zesha Saleem As Covid-19 cases are on the rise, the NHS has called for three groups of people to take part in the spring vaccination programme – as they’re at increased risk of the virus. Over the last week, the number of positive coronavirus cases increased to 7.1 per cent, compared with just 4.6 per cent the week before. This figure is based on a percentage of people who test positive among those with symptoms tested at sentinel “spotter” laboratories. Meanwhile, admissions to hospitals due to Covid-19 increased to 2.56 per 100,000 compared to 1.97 per 100,000 in the previous week. Thankf…