London, 15 November 2021 (PA Media/dpa/MIA) — The covid-19 vaccine booster program in Britain is to be extended to include healthy 40 to 49-year-olds, health officials have announced. The Joint Committee on Vaccination and Immunization (JCVI) said all adults over the age of 40 should be offered a booster, six months after their second dose. It has also said that 16 and 17-year-olds should come forward for a second dose of the Pfizer-BioNTech vaccine – which should be given at least 12 weeks after the first. The JCVI said that the broadening of the booster campaign and the offer of a second shot to 16 and 17-year-olds will "help extend our protection into 2022." It comes as ministers urged people to get boosters when called in a bid to save Christmas. Government minister Oliver Dowden said it was up to the public whether new controls would need to be imposed. So far, some 12.6 million people have had a third Covid-19 shot. The JCVI said people should be offered the Pfizer or Moderna vaccine as a booster, irrespective of which vaccine they had initially. A new study highlighted how boosters can significantly increase people's protection against getting a symptomatic case of covid-19. Two weeks after getting their booster, adults over 50 had at least 93 percent reduced risk of getting a symptomatic case of covid-19, according to a study from the UK Health Security Agency. Protection against more severe disease and death is expected to be even higher. Professor Wei Shen Lim, chair of covid-19 immunization for the JCVI, said: "Booster vaccine doses in more vulnerable adults, and second vaccine doses in 16 to 17-year-olds are important ways to increase our protection against covid-19 infection and severe disease. These vaccinations will also help extend our protection into 2022. "If you are eligible, please make sure to have these vaccines and keep yourselves protected as we head into winter." Dr June Raine, chief executive of the MHRA, added: "We welcome today's announcement by the JCVI, on the extension of the booster campaign to 40-49 year olds. "This further strengthens our ability to ensure people are protected against covid-19 and saves lives. "Our safety monitoring to date shows that covid-19 vaccines continue to have a positive safety profile for the majority of people. The vast majority of reactions which are reported relate to expected side-effects such as injection site reactions and flu-like symptoms, as was seen in our initial assessment. "Our proactive monitoring of the safety of booster doses does not raise any new concerns. "We also welcome the recommendation for 16 to 17-year-olds to come forward and have a second dose of the Pfizer-BioNTech vaccine. "People can be reassured that when we gave approval for the Pfizer vaccine for those 16 years and over in December 2020, we had thoroughly reviewed all the clinical trial data. "We have continued to carefully scrutinize all the data we have available to us and our robust surveillance program includes monitoring all suspected reactions for adolescents as well as adults. "We ensure all suspected reports are carefully followed up. The Expert Working Group of the Commission on Human Medicines has confirmed that reports of suspected myocarditis (heart inflammation) following covid-19 vaccines are extremely rare and that the balance of risks and benefits overall remains favorable." Earlier on Monday, Dowden said the vaccination program offered the best assurance that further covid-19 restrictions would not be needed over Christmas. The Conservative Party chairman told Sky News: "It is in our hands. If you get the booster when the call comes that is the biggest wall of defense that we have against covid. "I am confident that if we stick the course, people take the boosters when they are asked to do so, that vaccine wall will hold up and we will be able to have a decent Christmas this year. "There are no plans to stop Christmas happening. The huge difference this time is the vaccine."