Jul 27: Moderna begins Phase 3 COVID-19 vaccine trials in the US
The first Phase 3 clinical trial of a coronavirus vaccine developed by biotechnology company Moderna and the National Institute of Allergy and Infectious Diseases begins in the United States. The trial is to be conducted at nearly 100 research sites and aims to enroll approximately 30,000 adults who do not have COVID-19.
Aug 11: Russia first to approve a COVID-19 vaccine
Russia announces that its health regulator has approved a coronavirus vaccine for widespread use, becoming the first country in the world to do so. The news, however, is met with much criticism by scientists across the world who condemn Russia for skipping large trials to test the vaccine’s safety and efficacy.
Aug 24: First case of COVID-19 reinfection reported in Hong Kong
A 33-year-old man in Hong Kong is reported to have contracted the virus again, about 4.5 months after first being infected with the novel coronavirus. Still, little remains known about the body’s immunity to COVID-19, if any, the body develops after being exposed to the virus against the novel coronavirus once it has been exposed to it.
Sep 9: US to stop screening international arrivals for COVID-19
The U.S. announces it will no longer screen passengers arriving from other countries for COVID-19 and that international flights will no longer be required to fly into one of the 13 airports where enhanced coronavirus screening measures are carried out.
Sep 28: Global death toll hits 1 million
Coronavirus global death toll hits 1 million people less than 10 months after first case reported in Wuhan, China.