The geese pass by, leave traces by the water, and the new coronavirus leaves antibodies everywhere
Scholars from the National Center for Wildlife Research in the United States tracked neutralizing antibodies and pushed the time when the new coronavirus appeared in wild animals in the United States to 2019!
Related papers pointed out that in the 2019 sample test of the American white-tailed deer, one sample detected antibodies to the new coronavirus
The new coronavirus, which was previously thought to have appeared first in Wuhan, was found to have antibodies in American wild animals earlier.
Two "never"
Two "never" "This is a major breakthrough in the tracing of the new crown virus
New crown neutralizing antibodies have never been found in wild animals! New coronavirus infections earlier than humans have never been found in wild animals!
The former "never" is likely to make up a very important "puzzle" for the path of "new coronavirus from natural host to human"
The China-WHO New Coronavirus Traceability Joint Research Report believes that the transition of the new coronavirus from a natural host to an intermediate host and then to humans is the most likely of multiple paths
The latter "never" greatly pushed forward the emergence of the new coronavirus on the timetable
"There is currently no literature that finds that other animals have been infected by the new coronavirus in 2019.
"False positive" is too perfunctory
"False positive" is too perfunctory The US Department of Agriculture announced on its official website that there was only one positive in the 2019 sample, so it is likely to be a false positive
Reading the research methods in the paper carefully, you can find that the scholars of the National Wildlife Research Center in the United States use a highly specific neutralizing antibody detection technology
This technology simulates "actual combat": by making neutralizing antibodies and the spike protein of the new coronavirus "compete", they both bind to the receptors on the cell surface to see whether the antibody is stronger or the virus is stronger, which can really prevent the virus from attacking the cell.
"Even the neutralizing antibodies in patients who have been infected with SARS will be negative in such a test technique,
Therefore, the probability of false positives is extremely low
More cautiously, the researchers also used the two techniques to carry out repeated experiments, and the results were mutually confirmed
The paper reads: All samples were tested using alternative virus neutralization tests at the National Wildlife Research Center, and we also conducted a highly specific virus neutralization test using the infectious new coronavirus at the National Veterinary Service Laboratory
After undergoing double testing, the U.
S.
white-tailed deer antibody still showed positive in 2019.
If the "false positive" statement of the US Department of Agriculture is not a perfunctory work attitude, it is deliberately avoiding scientific facts
.
Scientists believe that the part of the United States that should start the traceability of the new coronavirus
Scientists believe that the part of the United States that should start the traceability of the new coronavirus "This is a very important traceability clue
.
Next, we should conduct further nucleic acid testing on the white-tailed deer samples at that time, and at the same time conduct a larger-scale investigation
.
" Experts said that if nucleic acids can be detected in the early samples, the nucleic acids should be obtained.
By comparing the sequence data with earlier human cases, a judgment about the "true source" can be drawn
.
In the United States, many experts have held the same view and believe that the wild deer family should be investigated as the reservoir of the new coronavirus
.
On March 15, "Life Sciences" published an article "Research found that white-tailed deer is susceptible to new coronavirus infection".
Researchers found that white-tailed deer and humans are highly homologous in terms of new coronavirus receptors.
Therefore, the new coronavirus is likely to pass through an intermediate animal host.
(Such as white-tailed deer) to humans
.
On May 10, the US Department of Agriculture infectious disease research expert Mitchell Palmer's team published a paper in Virology, saying that current evidence indicates that the new coronavirus may be transmitted from the animal host to humans, and white-tailed deer are vulnerable to the new coronavirus.
Infection, these findings support the inclusion of wild deer into the potential host or source of the new coronavirus for investigation
.
The latest blockbuster discovery-the American white-tailed deer has discovered antibodies to the new coronavirus in 2019, which may allow humans to be "one step away" from the answer to the source of the new coronavirus
.
After all, in the Chinese part of the China-WHO joint research on the traceability of new coronaviruses, tens of thousands of domestic animals, poultry, and wild animals have been tested across China, and no new coronaviruses (nucleic acids and antibodies) have been found
.
More and more research results show that the part of the United States that initiates the traceability of the new coronavirus will be able to get more truth about the source of the new coronavirus
.
The truth poly Jiaoxin Guan pneumonia epidemic
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