The new crown virus has also lasted for 2 years.
In the past few years, the new crown virus has also accompanied the transformation of human medical technology and has continuously changed its mutated strains.
As the virus replicates from generation to generation, the spikes responsible for the virus's attack, defense, escape, spread and other attributes are constantly mutated and accumulated.
From Alpha, Beta, Delta to Ormicron, the number of mutations is increasing, and the main variants are becoming more and more contagious.
Olmikron, can it really be compared to the flu?
Usually we measure the infectivity of a virus, often using R0, if there is no protection or antibody, the pathogen can be transmitted from one infected person to several people, the higher the number, the more contagious it is.
But now that the R0 of Omi kerong has reached 9.1, and the original strain of the new coronavirus is about 2-3, the same level as the flu, it is clear that Omilon can not simply think of the big flu, almost approaching the most contagious respiratory virus, such as measles.
At the same time, from the original strain to the Omilon, not only the infectivity is strengthened, but the incubation period is also shortening, which leads to a further increase in the difficulty of nucleic acid detection.
When an infected person tests positive for nucleic acid, the virus may have already spread, and it will spread to more people because it is highly contagious.
Viruses getting weaker? The latest data shows that the average case fatality rate of Omi kerong is 7.5 times that of influenza!
Current data show that Omikeron is far more transmissible than influenza and other COVID-19 variants.
As can be seen from the case fatality rate, the average case fatality rate of influenza worldwide is 0.1%, while the average case fatality rate of the Omikejong variant is about 0.75%, especially for the elderly over 80 years old, the case fatality rate is more than 10%.
Compared with the original strains at the beginning, the pathogenicity and mortality rate of the new crown mutant strains have declined today, not because of the weakening of the strains, but because of measures such as vaccination, drug use and timely isolation.
But will the coronavirus become more and more moderate?
I am afraid that no one can give an affirmative answer.
What can we do in the face of a sudden mutant strain?
First, timely vaccination
As of 00:00 on April 17, 2022, the number of deaths from COVID-19 in the fifth wave of the epidemic in Hong Kong is 8,926, of which 8,579 are ≥ 60 years old, accounting for 96.1%.
Also in more detail in the mid-term of the outbreak, the risk of unvaccinated deaths among people over 60 years old in Hong Kong is 21.3 times higher than that of those who have received ≥ 2 doses of vaccine, and 2.3 times that of those who have received 1 dose of vaccine.
According to the press conference on the prevention and control of the epidemic in Shanghai, the new deaths in this round are all elderly and elderly patients, and they are also accompanied by serious underlying diseases such as traumatic cerebral hernia, traumatic subdural hemorrhage, multiple cerebral contusion lacerations, traumatic subarachnoid hemorrhage, and central diabetes insipidus.
Therefore, timely vaccination can effectively reduce the risk of onset and severe illness, and is also an effective means to prevent and control the epidemic and block the spread of the epidemic.
Second, do a good job of personal protection
Because the virus will survive in the air for a period of time, especially in some poorly ventilated and crowded environments, the new crown virus will spread in the form of aerosols.
Personal protection work must be done, such as wearing a mask and minimizing travel to crowded areas and poorly ventilated environments.
Third, do a good job of personal hygiene
The new crown virus can be transmitted in the form of droplets such as coughing and sneezing, and once it passes through the eyes, nose or mouth and other mucosal areas indirectly or directly contact, it will be infected.
Especially after going out and going home, we must pay attention to personal hygiene.
For example, when you get home, spray your shoes and coat with disinfectant spray, and then wash your hands with running water and soap or hand sanitizer.
Fourth, do a good job of daily diet adjustment
Food should be diversified, nutrition must be comprehensive, especially rich in a variety of vitamins, high-quality protein, dietary fiber, and various mineral elements of the food should be balanced intake.
In addition, adding enough water every day can not only improve digestion and metabolic function, but also prevent the occurrence of fire, resulting in a decrease in resistance, thereby infecting the virus.
No infectious disease can really disappear suddenly
Looking back at history, it seems that many large epidemic infectious diseases will eventually disappear at some point in time.
But in fact, the so-called sudden disappearance is only limited to the scientific level at that time can not know the answer, the epidemic will eventually disappear, in essence, it is only the level of cost.
Therefore, we need to make all preparations, including virus variants that have appeared or may appear, and still do a good job in epidemic prevention and control, block the spread of the virus, and slow down the evolution of the virus.
No one can predict from God's perspective when the new crown virus will eventually disappear.
All we can do is be prepared and wait.
bibliography:
[1] Symptom prevalence, duration and risk of hospital admission in MENNI C. omicron and delta variant dominance sars-CoV-2 infection: a prospective observational study from the ZOA-CoV study[J].The Lancet, April 7, 2022.
[2] Song Chen,Tian Xiaohang. Face Omicron careless! Insist on doing a good job in personal protection[N]. Xinhua Daily Telegraph, 2022-04-14(007).
[3] Liao Kangsheng,Lu Hongzhou. Research Progress of the Novel Coronavirus Omikejong Variant: Implications for Its Scientific Prevention and Control Measures[J].Electronic Journal of Emerging Infectious Diseases,2022,7(01):1-5.