"Old" vaccines have new use of card-mediated seedlings or can prevent new crown virus infection.

The new crown outbreak is still spreading, and many countries are developing special vaccines against the new coronavirus.
at the same time, experts have noted that some "old" vaccines may also play a preventive role, as is the case with the use of tuberculosis prevention.
a number of studies and studies suggest that ka-Miao may have played a role in slowing the spread of the new coronavirus, a finding further supported by new results published recently in the Proceedings of the National Academy of Sciences.
1921, the car is the only anti-TB vaccine on the market.
in most countries with high rates of tuberculosis, newborns are vaccinated soon after they are born.
some epidemiological survey data since the outbreak of the new crown, the implementation of the card-mediated compulsory vaccination policy in the country, the new crown virus infection rate and the mortality rate is relatively low.
however, there are wide differences in national conditions, and these survey data are difficult to verify and are controversial because of the interference of socio-economic conditions, population structure, rural and urban environment, the new crown "pandemic" impact time, testing standards and the number of tests, and national epidemic prevention strategies.
researchers at Virginia Tech University, the National Institute of Allergy and Infectious Diseases, and others, reported in the Proceedings of the National Academy of Sciences that they reviewed potential biological evidence for the prevention of new coronavirus infection and further refined the relevant epidemiological data analysis by reducing potential distractions.
found that in european countries with similar national conditions, there was a significant correlation between the vaccination rate of cacao seedlings in one country and the death rate of new coronary disease, and that for every 10% increase in the vaccination rate of cacao seedlings, the rate of death of new coronary disease decreased by 10.4%.
this result suggests that cacao seedlings may have a protective effect on the new crown virus infection.
, however, the researchers stressed that the "large-scale" study still has limitations and that caution should be exercised, with further confirmation of the findings of the study needed to be further confirmed through clinical trials and the causal link between the vaccination of car-mediated seedlings and the prevention of new coronary disease.
on the impact of cacao-miao on the spread of the new crown virus, different teams and institutions have previously given differentiated conclusions.
researchers at the Johns Hopkins Bloomberg School of Public Health and other institutions in early April, said in a preprinted post that they had found that the new coronary death rate in countries that were widely vaccinated was significantly lower than in countries that did not inoculate the seed.
the researchers considered factors such as the country's economic situation and age structure, but the article is still subject to peer review.
the World Health Organization's daily outbreak report, released on April 13, says there is no evidence so far that cacao seedlings protect people from the new crown virus, so it is not recommended to prevent new crowns by vaccination.
but this early view may be revised with more new discoveries.
with more and more research and discussion, several countries have launched clinical trials to evaluate the effectiveness of card-mediated seedlings to prevent new crown infections. In a clinical trial conducted
the Murdoch Children's Institute in Australia, researchers recruited more than 2500 health care workers from across Australia using a multi-point randomized controlled trial to test whether cacao seedlings could help protect against new coronavirus infections at high risk of infection, or not develop into severe cases after infection.
, according to media reports, the Netherlands, South Africa and other countries have carried out similar clinical trials.
the prestigious medical journal The Lancet published in late April, "Thinking about the effects of inoculation card seedlings to reduce the effects of new crown infections", said that although there is some evidence that cacao seedlings may be effective in preventing new crown infections, but until the relevant clinical trials are completed, it is important to strictly follow WHO recommendations, only the use of card-mediated seedlings in randomized controlled trials to prevent new coronary virus infection, the abuse of card-mediated seedlings may also have a series of negative effects.
.