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The novel coronavirus pneumonia is still in the global rage.

has recently discovered a mutant COVID-19 mutant with multiple mutations, C.1.2, which is two times the mutation rate of the delta strain, such as Delta,

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. Some experts are worried that the new variant or delta variant is more difficult to deal with, and the existing new crown vaccine may not be effective Reuters reported on August 31 that scientists first found the c.1.2 variant in South Africa in May this year, which has now spread to most provinces in South Africa. Since then, the new variant has been found in Britain, Portugal, Switzerland, New Zealand and other countries < p > the New Zealand Herald reported that a spokesman for the New Zealand Ministry of health confirmed that a variant strain of this type was found at the Auckland border in late June 2021, but the virus did not enter the community

National Institute of infectious diseases in South Africa, C.1.2 evolved from C.1, which is one of the first waves of COVID-19's dominant spectrum in South Africa. p> < p > according to the study, the annual mutation rate of c.1.2 lineage is about 41.8, which is almost twice that of other mutant virus strains. The concern is the accumulation of additional mutations, which may also affect the virus's ability to escape antibodies and its infectivity, the study warned < p > it is reported that the c.1.2 mutant accounted for 1% of the local cases in South Africa in June and increased to 3% in July. Researchers are worried that the spread of c.1.2 mutant may be wider than people think, because its infection rate continues to increase every month, which is similar to the spread of beta and delta mutant < p > however, CNN also pointed out that more mutations do not necessarily mean more dangerous, because some mutations can weaken the virus, and some can offset the effects of other mutations. The research team, including Penny Moore, a virologist at the National Institute of infectious diseases in South Africa, said they were paying close attention to the problem < p > Richard lessells, an epidemiologist who participated in this study, said that c.1.2 may have more characteristics of evading patients' immune response than delta mutant. This new finding reflects the fact that the epidemic is not yet over. COVID-19 is still looking for ways to spread more easily. It is expected that more new strains of virus will appear in the future, but there is no need to panic too much at this stage. p> < p > on August 30, Eric Ding, an epidemiologist at Harvard University, expressed concern on twitter, saying that the mutation rate of c.1.2 is almost twice that of other mutant strains, which means that c.1.2 is the largest mutant strain found so far. He also warned that super mutant strains might appear in countries with low vaccination rates < p > other experts warned that the findings of this study highlighted the huge risk of countries abandoning epidemic prevention measures < p > however, Maria van kerkhove, an infectious disease scientist of the World Health Organization, said that at present, few confirmed cases were infected with the c.1.2 variant strain“ About 100 cases have been reported worldwide, and there is no upward trend at present ". If the situation changes, who will update people on its website and through press conferences < p > kohov also pointed out that the work of monitoring and evaluating virus variation has been ongoing, which is very important to understand the evolution of the virus, combat the epidemic and adjust the strategy as needed. So far, delta mutant is still the main infectious virus variant < p > in an interview with the South African media, Anban Pillay, deputy director of the South African Ministry of health, said that health professionals believe that the delta variant will not be the last, "and the new variant will develop as part of the natural evolution of the virus" < p > the health official confirmed that South African scientists were "studying the effectiveness of the vaccine against c.1.2", and said that the Ministry of health "expects some results to be published in the next few weeks."

as of last week, about 17.6% of South Africa's 58 million 560 thousand people have been vaccinated with one of the three COVID-19 vaccines currently available in the country. The country's health authorities approved the vaccines produced by Johnson & Johnson, Pfizer and AstraZeneca, but South Africa suspended the vaccination of AstraZeneca in February this year, including the weak effect of the vaccine on the widely popular beta variant < p > this article is the exclusive manuscript of observer.com and cannot be reproduced without authorization

2023-03-22 10:04:42