Argentina: COVID-19 Tests Bought from China Present Problems

first_imgBy Eduardo Szklarz/Diálogo May 26, 2020 Argentina purchased 170,000 Chinese rapid test kits to monitor the spread of the novel coronavirus. A report by the COVID-19 Unit of the Argentine Ministry of Science, Technology, and Innovation concluded that the Chinese kits presented false readings, and only detect one of the two antibodies they were designed to identify.The company Zhuhai Livzon Diagnostics, based in Guangdong, China, manufactures the test kits. The Argentine company Petroquímica Cuyo bought the kits and donated them to Argentina’s health authorities. The National Administration of Drugs, Foods, and Medical Devices (ANMAT, in Spanish) approved the kits.According to an official report, the Chinese COVID-19 kits only detect one of the two antibodies they were designed to identify. (Photo: Copy/Zhuhai Livzon Diagnostics)With a drop of blood, the Livzon kit detects two types of antibodies: IgM (immunoglobulin M) and IgG (immunoglobulin G). Separate tests are used to find each antibody. When the result is positive, two red lines appear; when it is negative, only one line appears.The manufacturer says on its website that it only takes 15 minutes to obtain results and that sensitivities to IgM and IgG are 90.6 percent and 99.2 percent, respectively. However, Argentina’s COVID-19 Unit concluded that the IgM detection is “weak.” “We do not recommend its use,” said the official report, according to La Nación newspaper on May 10.Concerning IgG, Argentine scientists determined that Livzon has 80 percent sensitivity and that “50 percent of these detections showed very faint lines,” the document says. The report indicates that people must wait an additional 10 minutes to read the kit’s results in an environment with good light, and adds that “faint lines are considered positive for COVID-19,” La Nación reported. According to the newspaper, Petroquímica Cuyo paid $700,000 to buy the tests.Only 0.6 percent of tests were positiveThe Health Ministry has used the Livzon kit to monitor the spread of the virus in the train stations of Buenos Aires. Authorities aim to use rapid tests to identify asymptomatic individuals, because they estimate that two out of three people who are infected present no symptoms.During the first stage of the epidemiological study, the kit was used on 1,270 volunteers, and delivered only eight positives (0.6 percent, according to official sources), which sparked controversy.Specialists consulted by the local press agree that it is an extremely low number, since passengers from the Buenos Aires Metropolitan area, which has Argentina’s highest viral circulation, travel through these stations. The faulty Chinese kits might underestimate the spread of the virus among the population and compromise the flexibility of Argentina’s quarantine.Health Ministry spokespersons told Infobae that after the kits were approved in the country, authorities decided not to use the IgM tests, due to their low sensitivity. They instructed personnel to wait 20 minutes for IgG and to consider faint lines as “positive.”Because of these limitations, testing could not be conducted randomly at the terminals. Volunteers needed to be asymptomatic, having no fever for example, during the past 21 days.Health Ministry sources also told Infobae that ANMAT did not approve the test for the market, but it did for this particular study. “What we are going to have is a panorama of how many people have positive antibodies in Argentina, knowing that if the sensitivity is 80 percent, there may be 20 percent more, and we also considered this data,” they said.last_img read more

Villarreal slaps N23b on Chukwueze

first_imgRelatedPosts Super Eagles stars model new national team jersey Osimhen, Chukwueze begin 14-day Isolation in Lagos Chukwueze gets new coach at Villarreal Liverpool and its eternal rival, Manchester City, will have to cough out €60 million (N23 billion) for the services of Nigerian whizkid Samuel Chukwueze.Reports from Spain had it that Villarreal had increased the release clause of a reported Liverpool and Manchester City target.Chukwueze was one of the breakout stars of La Liga last season, with the winger scoring eight goals in 38 appearances in all competitions in his first season at the top level.At the start of the summer, the 20-year-old was linked with the likes of Liverpool and Man City, having made no secret of his desire to play in the Premier League after missing out on a move to Arsenal as a teenager.However, no genuine offers materialised, meaning the winger would continue his development in Spain.His tenure in La Liga looked set to increase further, with reports that Chukwueze – described as the “next Arjen Robben” – is in line for a new contract that will see his exit clause rise from €60m.It will represent a blow for any Premier League club keeping tabs on him with a view to a future bid – with Real Madrid and Bayern Munich also said to be hovering – although it was claimed that the winger will not rush into accepting the deal if other clubs are interested. Tags: Samuel ChukwuezeVillareallast_img read more