Dr. Gigi Gronvall: Antigen Tests “The Hottest Christmas Toy”

Dr. Gigi Gronvall, a leading international expert on tests, kindly joined us for a spirited tour d’horizon. People need tests for multiple purposes on a continuous basis: You “can’t just get one test and forget it” since a test is just one moment in time. Sometimes however there are unrealistic, outsized expectations that tests will peer into the future. Why is the United States so prone to stumbling on tests? In 2020, responsibilities were thrown to the states, and antibody tests in the early days, approved by the FDA, were “the wild west” where often you could get a more accurate result “from flipping a coin.” In 2021, “a supply and demand market model” for antigen tests predominated, and when demand collapsed, Abbott destroyed millions of doses. More recently, since September of 2021, and accelerating under the pressure of Omicron, things are improving -- but “turning the ocean liner” is slow. The $3 billion investment in affordable antigen supply and accelerated development of new tests is showing results. The more recent commitment by President Biden to provide 500 million antigen tests through the mail to Americans has promise. “People want health information about their own bodies … people want access to tests. They know it is possible.” "Perhaps that progress can be extended in the future to home flu tests.” Dr. Gronvall also shared her thoughts on the Covid-19 controversy: put a focus on animal health and cleaning up live animal markets. And yes, we should cooperate with the Chinese: “You could get people together to exchange baseball cards and it would be productive.” So why not focus on vaccinating the world? On widespread, pernicious misinformation: “cut off the poison” immediately at its source and invest in long-term education.

Dr. Gigi Gronvall is a Senior Scholar at the Johns Hopkins Center for Health Security and an Associate Professor in the Department of Environmental Health and Engineering at the Johns Hopkins Bloomberg School of Public Health.