mutates again
winter is coming, and the winter epidemic prevention work in 2022 faces severe tests. Due to the new coronavirus's fear of heat and not cold, once the temperature drops, the virus will become easier to survive in this environment. According to media reports: the new coronavirus Omickron strain has mutated again and become stronger!
This variant strain appeared for the first time in my country. It is Hohhot, Inner Mongolia. The city's first confirmed case was found. After gene sequencing, it was shown as the new coronavirus strain BF.7 of Omickron . In fact, BF.7 is the abbreviation of Omickron BA.5.2.1.7, but this newly emerging strain will be more powerful.
According to relevant media reports: Hohhot City, Inner Mongolia Autonomous Region, held a press conference on epidemic prevention and control, saying that as of 24:00 on October 5, there were 1,218 positive infections in Hohhot, and the number of high-risk areas increased to 196. Local patients were subject to classified treatment for new coronary pneumonia infected.
inherits the mainstream
from World Health Organization . The main new coronavirus strain that is currently pandemic in the world is still the Omickron BA.5 series. The BA.5 series strains show the characteristics of strong toxicity, latency and escape ability. The subsequent BA.2.76 series inherits the above characteristics. Although the toxicity is slightly weakened, the virus escape ability seems to be constantly improving.
. The newly emerging BF.7 combines the characteristics of the first two, and has stronger infectiousness, diffusion and escape. Data shows that BF.7 will more easily escape the attack of neutralizing antibodies, which means that once this virus invades the human body, there is a high probability that it will successfully invade into the cell nucleus .
The road to fight the epidemic
So what are the abilities of BF.7? I still remember what Academician Zhong Nanshan once said: As of now, no drug can play an absolute preventive role in the new coronavirus. This sentence does not mean that our medical technology is not enough. new coronavirus has been raging for three years. In a very short period of time, humans have developed the new coronavirus vaccine to fight against the virus.
and then developed a special medicine for the new coronavirus to specifically restrain the new coronavirus. It has to be said that humans are really too strong. You should know that when the SARS epidemic was in the world in 2003, human scientists have not developed the SARS vaccine so far. We can't say that we can't develop it, we can only say that the SARS epidemic appeared unknowingly, and then disappeared completely in an occasional time, and never appeared again.
Therefore, in the face of this type of mysterious virus, it requires greater investment in developing vaccines, and this investment is tantamount to a waste of effort when targeting a disappearing virus. Now we know that the function of a vaccine is to use dead pathogens, which can be treated by extinguishing fires, attenuating, etc., so that it can maintain its toxicity while reducing the activity of the virus. As long as it exists in the human body, it will continuously stimulate the immune system and generate antibodies.
neutralizing antibody
From the initial alpha strain, when a person is infected with the alpha strain, after treatment and healing, the body will produce antibodies soon, but this antibody cannot stop the attack of the beta strain. This is what we mentioned as escape neutralizing antibody.
neutralizing antibodies are virus antibodies produced by the body after pathogens invade cells. If viruses invade cells again, the neutralizing antibodies will quickly recognize them, thereby killing the virus. However, the virus continues to evolve, resulting in its escape ability becoming stronger and stronger. Studies have shown that even if the patient has neutralizing antibodies of BA.5 in the body, it still cannot withstand the invasion of the BF.7 strain.
escape immunity
This is also the reason why the new coronavirus infection cannot be prevented so far. When your body produces a brand new viral antibody, the immune system has a high probability of invading the same virus and killing it before the virus invades, but once it invades the body, it is a brand new mutant virus.
Then this virus can avoid the attack of neutralizing antibodies and successfully invade the cell nucleus.It is worth mentioning that each mutation of the new crown does not enhance the toxicity, but increases the ability to escape and infection. This also means that our battle with the new crown virus is still continuing. As long as the virus mutates once, it will inevitably trigger a new wave of epidemics.
This article summarizes
At present, the main protective measure to prevent the new variant epidemic is still to wear a mask to isolate the virus from the body. Wearing a mask can not only prevent the attack of old-fashioned viruses, but also prevent the invasion of new BF.7 strains. According to relevant reports, the proportion of confirmed BF.7 strains in countries around the world is increasing, which means that BF.7 will soon become the mainstream strain of the world's pandemic.
The battle between humans and viruses is still ongoing. We cannot relax our vigilance, so that the virus can take advantage of it. #The new coronavirus may directly affect the heart DNA# #31 provinces increased their local area yesterday 183+1005# #Hohhot There are currently 1,218 positive cases # #Hohhot temporary hospital has built 1,269 beds #
