MADRID — Some political leaders are hailing a potential breakthrough in the fight against COVID-19: simple pin-prick blood tests or nasal swabs that can determine within minutes if someone has, or previously had, the virus.The tests could reveal the true extent of the outbreak and help separate the healthy from the sick. But some scientists have challenged their accuracy.Hopes are hanging on two types of quick tests: antigen tests that use a nose or throat swab to look for the virus, and antibody tests that look in the blood for evidence someone had the virus and recovered. The tests are in short supply, and some of them are unreliable.“The market has gone completely mad,” Spanish Health Minister Salvador Illa said Thursday, lamenting the l ack of face masks, personal protection equipment and rapid tests, “because everybody wants these products, and they want the good ones.”The Spanish government on Thursday sent 9,000 rapid antigen tests that were deemed unreliable back to a manufacturer that, according to the Chinese government, had no license to sell them.British Prime Minister Boris Johnson this week called the rapid tests a “game changer” and said his government had ordered 3.5 million of them.The U.K. hopes the


Continue To Full Article