From scare at Olympics to duration of antibodies, here are the top updates on coronavirus. A US gymnast has tested positive for COvid-19 at Olympics, USOPC said on Monday. Earlier, three more cases were detected at the Olympics Games village. Meanwhile, INSACOG’s Dr. NK Arora said the Delta variant accounted for 80% of new cases. The second wave of Covid-19 was primarily driven by the Delta variant. Also, a study has revealed that antibodies after infection can last for at least nine months. The study, conducted in a town in Italy, was published in journal Nature Communications. Watch the full video for more updates on the pandemic.