Public health expert Lu Hongzhou: Omi Kron is not the "final whistle" of the new crown epidemic, nor is it a big flu

The symptoms of infection with the Omicron mutant strain are mild, which is the randomness of the new coronavirus after the mutation, and does not mean that it is a signal of the end of the new crown epidemic; asymptomatic infected people, like symptomatic or even severe patients, can excrete infectious virus ; The research on the new coronavirus is deepening

On the afternoon of April 4, Lu Hongzhou, President of Shenzhen Third People's Hospital, answered the recent hotspots of new crown virus epidemic prevention, and guided the participants to face the current new crown epidemic from a scientific perspective

Several cases of "human-to-human transmission" of the new crown in Shenzhen still require further research

On January 10 this year, Shenzhen reported that a case was engaged in the international supply chain of goods and had a recent history of contact with overseas items; on January 17, another case was reported to be engaged in the receipt and delivery of overseas frozen reagents.

Official reports have repeatedly mentioned the "human-to-human transmission" of the new coronavirus and its variants.

In this regard, Lu Hongzhou said that the pathogenicity of different viruses is different.

For the new coronavirus, how many viruses do humans have to infect at a time to get sick? The work in this area includes research on viruses attached to items, how long can viruses in cold chain transportation and mail survive, and how many viruses can infect humans? Currently, with the support of the Shenzhen Science and Technology Innovation Committee, Lu Hongzhou is leading a scientific research team to study the characteristics and laws of the new coronavirus in the case of "human-to-human transmission"

According to reports, the virus infects humans, but also other animals

According to reports, in the long-term visits after the recovery of patients diagnosed with the new crown, it was found that 8% of the patients did not produce neutralizing antibodies, but those who did produce neutralizing antibodies, the antibody titers dropped rapidly, which also proved that "the population" Immunization" is not advisable

The findings of the study were also adopted by WHO

"Some people say that Omicron is now a 'big flu'.

After more than two years of repeated epidemics in Europe and the United States, a large number of people with weakened immune functions such as the elderly, underlying diseases, and obesity have died

Nationals of these countries have been infected with the new crown virus, or have been vaccinated with effective vaccines, and the overall fatality rate has dropped

Lu Hongzhou said that asymptomatic infected people can excrete a large amount of virus and have the same infectiousness as those infected with symptoms or even severe pneumonia

In the later stage, there will be dry cough symptoms.

Lu Hongzhou's team also found that the mutant strain of Omicron can evade various vaccines previously vaccinated
.

At present, a scientific research team in Shenzhen has developed a universal vaccine by studying the mechanism of immune escape of the mutant strain of Omicron
.
In the future, the research and development of vaccines is aimed at stimulating the cellular immunity of the human body, such as nucleic acid vaccines
.

The protection of vaccines for children is supported by existing data

At present, China's new crown vaccination is applicable to people over 3 years old
.

The Shenzhen Third People's Hospital found in the statistics on the vaccination of children under the age of 14 who were diagnosed with the new crown.
Children aged 0 to 3 were not vaccinated, and their symptoms fluctuated greatly; children aged 3 to 14 were vaccinated with different doses.
The proportion of the common type of vaccine after infection with the virus is small, and the protection of 3 doses of vaccine is better than that of only 1 dose
.

The characteristic of the new coronavirus is that it is constantly changing.
As long as there is a chance to replicate in the parasite, variants will continue to appear
.
Some people think that the mutated strain of Omicron has mild symptoms after infection, and he may be the terminator of the new crown epidemic
.
This statement is wrong.
As long as the epidemic is not controlled, new variants of the new coronavirus will continue to emerge.
The best way to control the epidemic is to get vaccinated
.

The new coronavirus infects humans by binding to receptors in the upper respiratory tract cells of the human body
.
The vaccines everyone has been vaccinated in the past are intramuscular injections without respiratory protection.
In the future, the focus of research and development should be on vaccines that produce cellular immunity and mucosal immunity in the respiratory tract
.

At present, the existing vaccines cannot achieve the functions of preventing infection and preventing the spread of the virus.
Future vaccines can avoid infection and virus replication
.

Viruses are changing, and vaccine development is constantly improving
.

Lu Hongzhou

In 2003, Lu Hongzhou participated in the treatment of SARS patients.
In 2009, he led a team to successfully treat 247 patients with influenza A (H1N1); in 2013, he discovered the world's first case of human infection with H7N9 avian influenza; Bora epidemic
.
In 2020, since the outbreak of the new crown epidemic, Lu Hongzhou has been on the front line of the fight against the new crown epidemic
.
He is currently the president of Shenzhen Third Hospital
.