According to Russian media reports relayed by CCTV, there was a super spreader of the new coronavirus in Russia where one person infected 1,500 people. This is also the current super-spreading record of the new coronavirus in Russia.
Beware of the Delta mutant strain, giving rise to "super spreaders"!
Semyonov, head of the Yekaterinburg branch of the Russian “Vector” National Scientific Center for Virology and Biotechnology, said: Usually one person infected with the common new coronavirus can infect 2-3 people, if the infection is the Delta mutation The virus strain may infect 5-6 people. A super-infectious person can infect even more people.
He said that the new coronavirus is usually transmitted through droplets, and it will reach its maximum spread in some social situations. If a person does not maintain social distance, does not wear a mask, and still goes to the subway, goes to work, hugs and kisses other people while being sick, then this person has a high chance of becoming a super spreader.
According to data released by the Russian New Crown Epidemic Prevention and Control Command on August 9, there were 22,160 new confirmed cases of new coronavirus infection in Russia in the past 24 hours, and a total of 6,469,910 confirmed cases. The three regions with the most new cases in a single day in Russia are Moscow, St. Petersburg and Moscow Oblast, with 2,150, 1,895 and 1,487 new cases respectively.
What is a "super spreader"?
Super spreaders refer to virus carriers who have been infected with an infectious virus and have a strong ability to spread viral infection, and who have no obvious symptoms of infection or who have not been detected to be infected with an infectious virus in the early stage.
There are quantitative standards for super-infected people. The WHO believes that if the number of infected people is more than 3, the infected person can be included in the scope of super-spreader; if the number of infected people is more than 10, the infected person can be classified as a super-spreader. Super spreader.
Another mutant strain "Lambda" appears! Thousands of people in the United States are infected! More dangerous than Delta?
As the epidemic develops, the new coronavirus continues to produce new variants through mutations!
According to a report by CCTV citing CNN, cases of infection with the "Lambda" strain have appeared in the United States. This mutated strain was first discovered in Peru in December last year.
At present, 1060 cases of caused by the "lambda" strain have been found in the United States, and the Japanese government has also reported it.
According to data released by GISAID, the lambda mutant strain has spread to 41 countries and regions , including Argentina, Colombia, Ecuador, Chile, Uruguay, Paraguay, etc.
United States: More than 1,000 cases of "Lambda" strain infection
According to CCTV citing CNN, with the spread of the epidemic, the "Lambda" strain infection first reported in Peru in December last year has appeared in the United States. cases.
According to data from the Global Initiative for Influenza Data Sharing, the world's largest influenza and new coronavirus data platform, there are currently 1,060 cases of new coronavirus pneumonia caused by the "Lambda" strain in the United States.
In addition, due to the rapid spread of the "Delta" mutant strain, the number of new coronavirus infections, hospitalizations, and deaths in the United States are also increasing.
"Lambda" may be more threatening than "Delta"?
Related research from the University of Tokyo in Japan in late July showed that the spike protein of the Lambda mutant strain contains three mutations (RSYLTPGD246-253N, 260 L452Q and F490S) and two other mutations (T76I and L452Q, respectively). , This means: The mutated Lambda strain is more contagious and drug-resistant than the original strain of the new coronavirus, and its resistance to neutralizing antibodies induced by the vaccine is increased by 150%.
However, the above research results have not yet been peer-reviewed and need to be further verified.
WHO: "Lambda" is one of the mutated viruses that "need to pay attention to"
The "Lambda" strain is spreading in many places around the world. How did the name "Lambda" come about? How contagious is it?
The World Health Organization issued a report on June 14 this year, naming the C.37 strain first discovered in Peru after the Greek letter lambda (lambda) and listing it as one of the mutated viruses that "need to pay attention to".
According to WHO standards, If the spread of the mutated virus that "needs attention" further accelerates and becomes serious enough to require adjustments to existing epidemic prevention measures, it will be upgraded to a mutated virus that "needs attention".
The report stated that there are several genetic mutations in the spike protein of the "Lambda" strain, which are potentially more contagious and more resistant to neutralizing antibodies. However, the evidence currently available is insufficient to confirm these mutations. the full impact. Further research is needed to determine the required countermeasures against this strain.
Source: CCTV News, CCTV.com, CCTV Finance, Sina Weibo, etc.
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