Global vigilance on the new crown of variation


“This new strain is very worrying because it’s more infectious.” On the 23rd local time, British health secretary Hancock said that two patients with new coronavirus in the country were infected with the mutated strain in South Africa. “Compared with the new strain in the UK, its degree of variation seems to be higher.”. The Financial Times said on the 24th that more than 20 mutations have been found in the UK and South Africa, and the number is “extraordinary”, which has aroused the vigilance of the scientific community. On the same day, the African Center for Disease Control and prevention also said that new coronavirus variants different from those in Britain and South Africa may appear in Nigeria. This week, Switzerland, Mexico, Germany, Italy and a number of other countries have started or plan to start large-scale vaccination. In this context, whether the existing new crown vaccine can “resist” the mutated virus has attracted much attention. The British government and relevant enterprises are quite confident, but some analysts believe that it is too early to make a judgment, “the core of the problem is not whether the vaccine is effective, but how effective they can be.”. The epidemic is still spreading in many countries in the world. In addition to the risks brought by the mutated virus, international public opinion also focuses on the situation of vaccines in China. On the 23rd local time, the state government of Sao Paulo, Brazil announced that the new coronal vaccine developed by Beijing Kexing Zhongwei Biological Technology Co., Ltd. is effective. However, due to the delay in the release of specific data, Western media began to hype “China is not transparent”. The director of Brazil’s Butantan Research Institute said that the delay had nothing to do with the effectiveness of the vaccine. Kexing hopes to integrate the test data of Brazil, Indonesia and Turkey. After all, “the same vaccine can not get three effectiveness results.”.
British health secretary Hancock said at a press conference on the 23rd that two patients in the country were infected with a new strain of coronavirus that appeared in South Africa. They were contacts of cases recently returned from a trip to South Africa. Britain decided to suspend flights with South Africa from 9:00 on the 24th.
The new strains in the UK and South Africa are known as “b.1.1.7” and “501.v2”, respectively, which are believed to be related to the recent surge in confirmed cases in South Africa – the number of new cases in a single day rose from less than 3000 to more than 10000 in less than a month, Deutsche Welle said on the 24th. A record of 231000 new cases were reported in South Africa on a single day. The new coronavirus belongs to the virus that mutates slowly and appears once or twice a month on average. However, genetic analysis showed that there were more than 20 mutations in the varieties found in the UK and South Africa, the Financial Times said on the 24th. Susan Hopkins, executive director of the UK public health agency, said on the 23rd that the mutated viruses in South Africa and the UK are very different and belong to different mutations.
“The virus seems to be spreading faster in the first wave than in the second.” Karim, CO chairman of South Africa’s new coronavirus task force, said on the 24th that the severity of the second wave of the epidemic “is not yet clear.”. “We are entering a particularly dangerous stage in this pandemic.” Andrew Preston, a microbiologist at the University of bath in the UK, said, “a large number of unusual mutations appear in both new varieties almost at the same time, which makes the effective implementation of vaccination more urgent.”
On the 23rd, the number of new cases and deaths in a single day in the UK reached a new high of 39237 and 744 respectively. On the same day, Hancock announced that from the 26th, Sussex, Oxfordshire, Cambridge and other places will be upgraded to the fourth level of prevention and control, and the number of residents affected by the “closure” is expected to increase to 24 million. Hancock said the number of new cases in the UK rose by 57% last week, with nearly 19000 new crown patients hospitalized. “We can’t have the Christmas we all want.”.
And University College London Professor Christina Pagel told the times that it was too late to start putting more areas into level 4 prevention and control on the 26th. “We are in a very dangerous situation. If we just wait for the virus to spread to the north, the whole country will be caught in a sea of epidemic. We are always behind Why let people have big parties at Christmas? It’s asking for trouble. “
British housing, community and Local Government Secretary Patrick told the BBC on the 23rd that the government is evaluating the epidemic prevention measures to determine whether more stringent measures need to be taken in more parts of England. He said there were no plans for a full blockade in England, but the government wanted to ensure that the grading system was “sufficiently robust.”. However, the British “Manchester Evening News” disclosed on 23 that government officials discussed the plan to implement the national blockade from 26 at a senior meeting on 22. “The situation is developing very fast, we need to deal with it at the same speed.” The source said.
At the end of last week, the British government said that after the 70% increase in the infectivity of the mutated new coronavirus in the country, European countries first responded by introducing measures such as restricting flight entry, followed by countries from other continents. Now, “b.1.1.7” has “invaded” Asian countries and regions. Israel’s Ministry of Health said on the 23rd that four cases in the country were infected with the new strain. On the same day, a 17-year-old Singaporean girl who had studied in the UK was confirmed to be infected with the mutated virus, while Malaysia’s health director, nohishan, also said that a new strain appeared in the new crown samples collected in Sabah. On the 23rd, the Hong Kong Centre for health protection said that the viral gene sequencing of two patients was consistent with that of “b.1.1.7”. They were all returned students from the UK.
In the case of the United States, the head of the Department of ecology and evolutionary biology at Arizona State University

Covering Dagu glacier


On October 17, the results of a two-month “blanket” experiment on Glacier No. 17 of Dagu glacier revealed that the melting speed of ice body in the “covered” area was significantly reduced. Compared with the ice body in the uncovered area, the ice body could slow down the melting thickness of glacier by 1 meter, and it was preliminarily estimated that the melting rate of glacier could be reduced by about 70%.
Since August this year, Dagu glacier Scenic Area Administration and the cryosphere Laboratory of the Chinese Academy of Sciences jointly carried out the first “Application of geoengineering” measures to slow down glacier melting in China. The State Key Laboratory of Cryosphere science, Northwest Institute of ecological environment and resources, Chinese Academy of Sciences, has set up a 500 square meter experimental site at an altitude of 5000 meters on glacier 17 of Dagu glacier. A layer of geotextile with thickness of 5mm or 8mm is laid on the ice surface, which is like covering the glacier with a quilt. The experimental results show that this method can effectively slow down the glacier melting.

Us quasi carrier explodes and fires


According to US media reports, the US Navy surface ship command released the latest news that the amphibious attack ship “good man Richard” in San Diego naval base, California, exploded in the early morning of July 12, and then caught fire. At present, the fire has lasted for six hours and has not been extinguished. 21 people have been injured and more casualties have not been counted. Of the 21 injured, 17 were sailors, in addition to 4 civilian personnel. At present, the injured have been transported to local hospitals for treatment, and none of the injuries they have suffered are fatal.
The report said that when the ship exploded and caught fire, there were two missile destroyers nearby. After the explosion, the two warships quickly left the berth to avoid being affected by the fire. When the ship exploded, the ship was in the state of technical maintenance. At that time, there were 160 sailors on board, and the U.S. Naval Command said all the personnel on board had left the ship and no one was missing.
It is understood that the good Richard is No. 6 of the hornet class amphibious assault ship. The ship’s home port was in San Diego military port. At that time, the ship was in the process of upgrading. After the accident, it is likely that the upgrade of the ship will be delayed. As the fire has not been extinguished, the extent of damage caused by the fire can not be determined.
The explosion occurred at 8:30 a.m. local time and was located in the middle of the ship. After the explosion and fire broke out, all members of the ship were evacuated. The US Navy sent several tugboats and fire boats to put out the fire of the Goodman Richards. However, the whole fire fighting work lasted for six hours, and no open fire was put out on board.
It is understood that Goodman Richard belongs to the seventh fleet of the United States Maritime fleet. The ship was previously deployed in the Asia Pacific region. During the two years from 2015 to 2016, the Goodman Richards made several sorties in the Asia Pacific region and repeatedly challenged neighboring countries. At that time, the ship was stationed in Guam and Yokosuka port, and even visited many Asia Pacific ports. The warship can carry a variety of Shipborne helicopters. Although its attack capability is limited, it frequently appears in the Asia Pacific region, which means a lot of provocation. After that, the ship withdrew from the Empress Dowager Yat Sen and received medium-term maintenance and upgrading at the home port.
Experts said that as a “small aircraft carrier”, the amphibious assault ship is more flexible than the aircraft carrier in deployment, and the cost is far lower than that of the aircraft carrier. Therefore, it is favored by many countries. Although the accident of the Goodman Richards, it should not affect the future deployment of the US military, because the US Navy has six hornet class amphibious ships, in addition to the United States class amphibious warships and other amphibious ships, it can Quickly replace the good Richard on mission.

New crown of infection of newborn triplets


The triplets born in the northeastern state of San Luis Potosi were positive for the new coronavirus within a few hours after birth. They may have contracted the virus in their child’s palace, the Mexican health department said Tuesday.
“On the day of their birth (the 17th), they tested for the virus because they were premature,” state health official Monica Langer told a news conference. The results were positive. “
Only one infant has novel coronavirus pneumonia, and the other two babies may be asymptomatic as well as their parents, the report said. Parents are still waiting for their test results.
Lanhel said it was “impossible” for children to get the new coronavirus after birth because they had been tested within hours of birth.
“That’s what we’re looking at, maybe the virus is spreading through the placenta,” she said. Now we can’t confirm it. This case is shocking and we will study it. “
Mexico’s novel coronavirus pneumonia is in a severe situation. 22 local health authorities reported 4577 new confirmed cases and 759 deaths. The total number of novel coronavirus pneumonia cases has reached 185122 cases and the total number of deaths has reached 22584 cases.

Countries turn to China urgently


Spanish Prime Minister Sanchez announced in the prime minister’s office on the evening of March 14 local time that Spain will implement the measures of “closing the city” to fight against the new crown epidemic from now on, and the travel of the whole country will be restricted to the greatest extent, and the Spanish government will make every effort to fight against the spread of the new crown virus.
On March 14 local time, after a 7-hour cabinet meeting, Prime Minister Sanchez of Spain announced a new measure to deal with the new crown epidemic in the prime minister’s mansion. Sanchez announced that all Spain would enter the state of closure from now on, and the actions of the whole Spanish people would be restricted. Except for activities such as buying food, going to hospital and working, people must stay at home and not Walking around the streets, the government will use armed forces to implement the measure at any time. Unnecessary public places, such as commercial areas, museums, libraries, restaurants, etc., will be closed to the public. Meanwhile, the national public and private traffic flow will be restricted. During the outbreak, the Spanish government will use all resources to fully support the work of medical staff.
Sanchez said that Spain is at a critical stage in the fight against the new coronavirus. The government will do its best to protect the health of its citizens, and the whole country will do its best to implement existing measures to defeat the new coronavirus. Novel coronavirus pneumonia in Spain was diagnosed as 6393 cases at the end of 14 hours local time, including 195 deaths, 272 severe cases and 571 cured cases.

How long will the mask last


The novel coronavirus pneumonia novel coronavirus pneumonia prevention and control has achieved some results. Professor Zhang Wenhong, head of clinical treatment expert group of Shanghai new crown pneumonia, suggested that we should maintain high vigilance against epidemic situation, and we must not hold large scale gatherings. Professor Zhang said: “this state may be maintained for another one to two months. At that time, there was no new one. Basically, we can take off the mask. “