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Lambda, the most recent type of coronavirus to be screened by the World Health Organization, worries Latin American authorities and confuses scientists because of their “unusual” mutations.
Originally known as C.37, the Lambda breed was first discovered late last year in Peru, and has spread to 27 countries, including the UK. Public Health England this week said it was known “nationwide,” although the number of cases it identified remained low.
Pablo Tsukayama, a professor of microbiology at Cayetano Heredia University in the Peruvian capital of Lima, said that when doctors discovered this in December, he was just “one of 200 models”.
“By March, there were about 50% samples in Lima and now about 80%. This could mean that the prevalence of the virus is higher than other species, ”he said.
According to the WHO, Lambda had 82% of new Covid-19 cases in May and June in Peru, which The highest rate of coronavirus deaths in the world. In neighboring Chile, it accounts for about half of new cases.
Scientists, however, still question whether Lambda’s evolution is contributing to its spread.
“There is currently no evidence that she is more aggressive than other nations,” said Jairo Méndez Rico, a medical consultant who is leaving the Pan-American Health Organization. “She may have the virus but more work needs to be done.”
The WHO in June named Lambda the seventh “most diverse” to date. The World Health Organization believes that such practices are less dangerous than its “several species” – Alpha, Beta, Gamma and Delta originally found in the UK, South Africa, Brazil and India respectively – but say they still need to be monitored closely.
One week later, on June 23, PHE in the UK selected Lambda as another item under investigation “due to global growth and several notable changes”. PHE confirmed that in the absence of any evidence Lambda had developed a serious infection or had given an effective vaccine.
“One of the reasons why it is difficult to understand the risk from Lambda, using statistics and labs, is that it has an unusual change, compared to other breeds,” explained Jeff Barrett, director of the Covid-19 Genomics Method at the Wellcome Sanger Institute at UK.
Barrett added that the lack of genetic engineering in Latin America made it difficult to determine how Lambda operated the Covid-19 eagles in the region.
Lambda has seven unique mutations in the malignant proteins that the virus uses to infect human cells. Researchers are intrigued by another L452Q mutation, similar to the L452R mutation that is believed to contribute to Delta transmission.
Monica Acevedo and colleagues at the University of Chile, Santiago, learned how Lambda carries the virus through blood transfusions from health workers who received the CoronaVac vaccine from China.
As a result, he wrote a printing paper On Thursday, point out that Lambda is more contagious than Gamma and Alpha and is capable of escaping antibodies produced by vaccines. “Most of our data shows for the first time that mutations found in Lambda spice protein contribute to antibodies and infection control,” he wrote.
In Brazil, where Gamma disease is still endemic, a team of researchers at a hospital in southern Porto Alegre examined a patient with Lambda. “Given that the breed has spread rapidly in Peru, Ecuador, Chile and Argentina, we believe that Lambda has ample opportunity to change the situation,” he concluded. printing paper, which was not reviewed by their peers.
Latin America has become a global epidemic. At least 8 percent of the world’s population account for 20% of coronavirus cases. In recent weeks, Colombia, Paraguay and Uruguay have seen surges on false charges.
“We see that some are recovering from the disease in the northern hemisphere, because many countries in our region are still in the process of recovery,” PAHO chief Carissa Etienne said this week.
Cases are still rising in countries including Colombia, Brazil, Bolivia and Uruguay, Etienne said, adding that hospitals are struggling to expand hospitals.
“Even in the worst case scenario one in ten people in Latin America and the Caribbean has received a Covid-19 vaccine – which is unacceptable,” he said.
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