Can card seedlings prevent new crown infections? Clinical trials have been initiated in many countries.

Text . . . The new forest crown outbreak is still spreading, with nearly 2.27 million new cases confirmed worldwide last week, the second wave of the global outbreak.
While many countries are developing special vaccines for the new coronavirus, the future of these vaccines is uncertain, and following the AstraZeneta/Oxford vaccine, research on the new coronavirus has been suspended due to unknown symptoms in the participants.
, on the other hand, experts have also noted that some of the original vaccines may also play a preventive role, originally used to prevent tuberculosis, one of the card seedlings.
, clinical trials have been launched in several countries to assess the effectiveness of card-based seedlings in preventing new coronavirus infections, including Australia, the Netherlands, Spain, Brazil and South Africa.
now, the UK also plans to launch experiments.
The braCE trial, called "BCG Vaccination to Reduce the Impact of Neocycemia on Health Care Providers" (BRACE), was initiated by the Murdoch Children's Institute (MCRI) in Australia and involved researchers recruiting health care workers from across Australia using a multi-point randomized controlled trial to test whether the card was able to help protect against neo-coronavirus infections at high risk of exposure, or not develop serious cases after infection.
the trial has received more than $10 million from the Bill and Melinda Gates Foundation for its global expansion.
comes after trials in Australia, the Netherlands, Spain and Brazil.
, the UK joined the BRACE trial, led by the University of Exeter.
in the UK, routine card vaccination stopped in 2005 due to the low incidence of tuberculosis among the general population.
uk trial will be the largest of its kind, recruiting more than 10,000 health care workers to provide participants with BCG vaccines or placebo injections. Professor John Campbell, head of the
BRACE trial in the UK and head of the University of Exeter School of Medicine, said: "Global COVID-19 deaths have exceeded 1 million, and card seedlings have been shown to generally enhance immunity, which may provide protection against COVID-19, and we are pleased to be able to contribute to a large-scale international BRACE study, and we are working to determine whether the BCG vaccine can protect people at risk of COVID-19.
previous studies have shown that the BCG vaccine reduces susceptivity to a range of viral infections, including viruses similar to the COVID-19 virus.
vaccine "trains" the immune system to make it stronger against other infections.
hope that this improved "innated immunity" will provide time for the development of effective and safe new crown vaccines.
in the UK, the trial will be conducted in the Exeter Clinical Trials Division.
participants completed daily symptom records through an app, performed COVID-19 tests when symptoms appeared, completed regular questionnaires, and provided blood samples.
researchers will compare the different responses of blood cells to COVID-19 and other viruses without BCG vaccination.
on the impact of card-mediated seedlings on the spread of the new coronavirus, after different teams and agencies have come to different conclusions.
now with the launch of clinical trials in many countries to assess the effectiveness of card-based seedlings to prevent new coronal infection, the causal link between card-based seedling vaccination and prevention of new coronal severe disease will also fall out of the water, let's wait and see! Reference Source 1. Kop: Whether Ka-Miao can prevent new coronavirus infection.