Variant Omicron, Fauci: “Encouraging Signs on Symptoms and Disease”

“There are encouraging signs about the symptoms of the Omicron variant and the severity of the disease. But you have to be cautious.” Professor Anthony Fauci, immunologist and advisor to US President Joe Biden, thus photographs the picture relating to the Omicron variant. Infections are increasing, particularly in South Africa, while researchers from numerous countries are working to answer as precisely as possible a series of questions: is the Omicron variant more contagious? Are the symptoms milder? Are vaccines effective? “The variant is becoming the dominant variant in South Africa. It is here in the US in at least 15 states and it is in at least 40 countries. What will happen when the Omicron variant competes with the Delta variant?” Asks the immunologist, delineating one. still fluid scenario in connection with CNN. Read also “The vaccines we are using are directed at the original strain of the virus. We are getting good protection against the Delta variant, particularly with the booster dose. With the booster, there will probably be a considerable level of protection against the Omicron variant as well. “, he adds. Spotlight on South Africa, which discovered the variant and is now seen as a point of reference in analyzing the situation. The Omicron variant is linked to a spike in reinfections in the country, the risk of reinfection in people who have already recovered could be double compared to previous variants, as hypothesized by a study not yet peer-reviewed. Scientists, highlights the BBC, have analyzed about 36,000 ‘suspicious’ samples to verify data on second infections. The data did not show peaks during the waves dominated in the country by the Beta or Delta variants which also, according to results obtained in the laboratory, would have had the partial ability to overcome the vaccine barrier. Now there is a surge in reinfections: not all patients have been subjected to analyzes aimed at identifying the variant, but the timing suggests that Omicron is involved in the phenomenon. Professor Juliet Pulliam, of Stellenbosch University, is one of the signatories of the study. The scientist refers to “a greater ability to infect previously infected individuals”. Professor Willem Hanekom, director of the Africa Health Research Institute, also contributes to enrich the picture. “We know 3 things we didn’t know last week,” he tells the BBC. “The first thing is that the virus is spreading with extraordinary speed in South Africa, the increase in cases is much faster than in the previous 3 waves. It seems that Omicron is able to spread very easily and virtually all cases. we see now in South Africa are Omicron cases, “he explains.” The second thing is about the data we have on reinfections. After you have covid, you have about 1% chance, or less, of getting the infection again and get sick again from this virus, “he says. “The third piece of data we have refers to clinical cases and the severity of the disease. The data suggests that the disease may occur more frequently among young people and particularly among those who are not vaccinated. So far, symptoms have appeared milder. But I want to emphasize that we have to be cautious: these are the very first days, “he notes. “A large proportion of hospitalized people are not vaccinated. Vaccines may be less effective but the important point is that we believe they protect against serious illness and death. We should have laboratory data on vaccine efficacy within a week. Professor Wolfgang Preiser, also of Stellenbosch University, comments on the origin of the variant, identified in mid-November. “According to current knowledge, an initial form of the Omicron variant evolved as a separate form of the virus before the Alpha and Delta, “he tells the Dpa. The scientist is part of the group of researchers who discovered Omicron. The hypothesis is that the variant evolved over months without attracting particular attention. The analyzes and sequencing made it possible to ascertain that Omicron, found in South Africa and Botswana, has a large number of mutations, including those located in the Spike protein, the attachment point that the virus uses. fights against human cells .. The researcher, as pointed out by the Dpa, takes into consideration a series of hypotheses related to the origin of Omicron. The variant may have developed in a patient with HIV or another form of immunodeficiency. In a person with these characteristics, the coronavirus could replicate over months and change without being completely eliminated by the immune system. “It’s a hypothesis and it’s not proven,” says Preiser.