Скачать или смотреть Scientists are trialling a 100-year-old vaccine in the fight against Covid-19 - News Today

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For any copyright, please send me a message.  Scientists are investing if a vaccine usually used to protect children from tuberculosis could help adults fight against coronavirus.  The Bacillus Calmette–Guerin (BCG) vaccine - first developed in 1921 - has a number of “off target effects” including stimulating the immune system.  As such, it is being trialled globally to 10,000 people, predominantly health care workers.  Researchers say it would not be the ultimate solution to the Covid-19 crisis, but would instead help people fight off coronavirus until more effective vaccines are discovered.  The trial is being led in the UK by the University of Exeter and healthcare staff and care home workers are now being recruited.  The study is co-ordinated by the Murdoch Children’s Research Institute in Melbourne, Australia, and has received more than 10 million US dollars (£7.6 million) from the Bill and Melinda Gates Foundation to allow its global expansion.  The Peter Sowerby Foundation has contributed funding to support the Exeter trial site.  The UK joins study centres in Australia, the Netherlands, Spain and Brazil in the largest trial of its kind.  Participants will be given either the BCG vaccine, which is currently given to more than 100 million babies worldwide each year to protect against tuberculosis, or a placebo injection.  In the UK, routine BCG vaccination was stopped in 2005 because of low rates of TB in the general population.  Professor John Campbell, of the University of Exeter Medical School, said: “Covid-19 has killed more than a million people globally, with well over 33 million people acquiring the disease, sometimes in its severest forms.  “BCG has been shown to boost immunity in a generalised way, which may offer some protection against Covid-19.  “We’re excited to be contributing to the large-scale, international study where we are seeking to establish whether the BCG vaccine could help protect people who are at risk of Covid-19.  “If it does, we could save lives by administering or topping up this readily available and cost-effective vaccination.”  Previous studies suggest that the BCG vaccine could reduce susceptibility to a range of infections caused by viruses including those similar to the novel coronavirus causing Covid-19.  Examining the mechanism by which this may work is part of the trial being conducted by the researchers.  The BCG vaccine boosts immunity by “training” the immune system to respond to other subsequent infections with greater intensity.  Researchers hope this improved “innate immunity” will buy crucial time to develop an effective and safe vaccine against Covid-19.  The trial is recruiting care and healthcare workers in the south west of England, who can attend clinic