© 2026 ABC News

\"Start Here\" offers a straightforward look at the day's top stories in 20 minutes. Listen for free every weekday on Apple Podcasts, Google Podcasts, Spotify, the ABC News app or wherever you get your podcasts.

What to know about the coronavirus:

Tune into ABC at 1 p.m. ET and ABC News Live at 4 p.m. ET every weekday for special coverage of the novel coronavirus with the full ABC News team, including the latest news, context and analysis.

","canonicalUrl":"https://abcnews.com/Health/results-antibody-test-study-reveal-covid-19-cases/story?id=70249753","legacySlug":"/wellness/story/results-antibody-test-study-reveal-covid-19-cases-70249753","noIndexNoFollow":false},"publishTime":"00:11","publishDate":"04-21-2020","updatedTime":"10:57","updatedDate":"04-21-2020","socialImage":{"alt":"A medical professional administers a coronavirus (covid-19) test at a drive thru testing location conducted by staffers from University of California, San Francisco Medical Center (UCSF) in the parking lot of the Bolinas Fire Department, April 20, 2020 in Bolinas, Calif.","credit":"Ezra Shaw/Getty Images, FILE","ratio":"16x9","url":"https://s.abcnews.com/images/Health/covid-test-gty-aa-200420_hpMain_16x9_1600.jpg","width":992,"height":558},"datePublished":"4/21/2020 00:11:00 GMT","video":{"live":false,"id":70249753,"headline":"Antibody study suggests COVID-19 rates higher","mediaAssetTitle":"ANTIBODY RESULTS","description":"The testing is a joint venture by USC and Los Angeles County.","duration":"2:36","posterImg":{"url":"https://s.abcnews.com/images/GMA/default-img-undefined.png","width":608,"height":342},"video":{"feed":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2020/04/200420_wn_hartung1_639_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8"},"playlist":["133144263","132956835","132488083"]},"relatedItems":[{"contentType":"video","date":"May 20, 2026","headline":"Fashion mogul’s son arrested in father’s fatal fall","section":"News","slug":"/video/133144263","id":"133144263","image":{"alt":"VIDEO: Fashion mogul’s son arrested in father’s fatal fall","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Fashion mogul’s son arrested in father’s fatal fall","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260520_gma_ally_fall3_732_hpMain_1x1_1600.jpg"}}]}},{"contentType":"video","date":"May 14, 2026","headline":"Trump meets Xi Jinping in high-stakes Beijing summit","section":"News","slug":"/video/132956835","id":"132956835","image":{"alt":"VIDEO: Trump meets Xi Jinping in high-stakes Beijing summit","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Trump meets Xi Jinping in high-stakes Beijing summit","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260514_gma_bruce_china1_hpMain_1x1_1600.jpg"}}]}},{"contentType":"video","date":"April 29, 2026","headline":"Grand jury indicts former FBI director over Instagram post","section":"News","slug":"/video/132488083","id":"132488083","image":{"alt":"VIDEO: Grand jury indicts former FBI director over Instagram post","credit":"ABCNews.com","ratio":"1x1","url":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_1x1_608.jpg","width":384,"height":384},"images":{"alt":"VIDEO: Grand jury indicts former FBI director over Instagram post","credit":"ABCNews.com","crops":[{"16x9":{"small":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_16x9_608.jpg","medium":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_16x9_992.jpg","large":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_16x9_1600.jpg"}},{"9x16":{"small":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_9x16_608.jpg","medium":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_9x16_992.jpg","large":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_16x9_1600.jpg"}},{"1x1":{"small":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_1x1_608.jpg","medium":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_1x1_992.jpg","large":"https://s.abcnews.com/images/GMA/260429_gma_thomas_comey2_706_hpMain_1x1_1600.jpg"}}]}}],"relatedContentSection":"news","schemaContent":{"name":"Antibody study suggests COVID-19 rates higher","description":"The testing is a joint venture by USC and Los Angeles County.","duration":"2:36","uploadDate":"04-21-2020","publication":"04-21-2020","images":"https://s.abcnews.com/images/GMA/default-img-undefined.png","url":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2020/04/200420_wn_hartung1_639_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","contentUrl":"https://service-pkgabcnews.akamaized.net/opp/hls/abcnews/2020/04/200420_wn_hartung1_639_,500,800,1200,1800,2500,3200,4500,.mp4.csmil/playlist.m3u8","link":"https://www.goodmorningamerica.com/news/story/results-antibody-test-study-reveal-covid-19-cases-70249753"}},"playlist":[{"id":"133220149","contentType":"story","section":"news"},{"id":"133179167","contentType":"story","section":"news"},{"id":"133144373","contentType":"story","section":"news"},{"id":"133144059","contentType":"story","section":"news"},{"id":"133143081","contentType":"story","section":"news"},{"id":"133075455","contentType":"story","section":"news"},{"id":"133063114","contentType":"story","section":"news"},{"id":"133063086","contentType":"story","section":"news"},{"id":"133015093","contentType":"story","section":"news"},{"id":"132998564","contentType":"story","section":"news"},{"id":"132998072","contentType":"story","section":"news"},{"id":"132977374","contentType":"story","section":"news"},{"id":"132977531","contentType":"story","section":"news"},{"id":"132962364","contentType":"story","section":"news"},{"id":"132958371","contentType":"story","section":"news"},{"id":"132932494","contentType":"story","section":"news"},{"id":"132927870","contentType":"story","section":"news"},{"id":"132911868","contentType":"story","section":"news"},{"id":"132911765","contentType":"story","section":"news"},{"id":"132880952","contentType":"story","section":"news"}],"kvps":{"pgtyp":"article","lang":"en","sp":"goodmorningamerica","programmatic":"true","bundleId":"com.abcnews"}},"analytics":{"accountID":"wdgnewwdgnewgmaweb","ns":"gma","pageName":"gma:news:video","pageType":"video","globalSpecVersion":"v1.08","siteDifferentiator":"gma:site","tagID":"g_page01","userABCookie":"0","section":"news","title":"Antibody study suggests COVID-19 rates higher","pubTime":"20:11","pubDate":"04-20-2020","modTime":"06:57","modDate":"04-21-2020","taxonomyTags":"none","id":70249753,"editorialOtherSubjects":"","wordCount":"none","columns":"none","authors":"","authorsUnit":"none","authorsBureau":"none","subBrand":"Good Morning America","provider":"Good Morning America","videoName":"Antibody study suggests COVID-19 rates higher","mediaAssetTitle":"ANTIBODY RESULTS","videoId":70249753,"mediaOnPage":"video","legacySlug":"/wellness/story/results-antibody-test-study-reveal-covid-19-cases-70249753"},"taboola":{}},"request":{"headers":{},"httpVersion":"1.1","method":"GET","url":"/video/70249753","vary":{"host":"www.goodmorningamerica.com","cached":true,"path":"/video/70249753","forwarded-proto":"https","device":"desktop","userab":"0"}},"viewport":{"width":1260,"height":0},"user":{}};