![In this April 10, 2020, photo released by Xinhua News Agency, a staff member holds up a sample of a potential COVID-19 vaccine at a production plant of SinoPharm in Beijing. In the global race to make a coronavirus vaccine, the state-owned Chinese company is boasting that it gave its employees, including top executives, experimental shots even before the government OK'd testing in people. (Zhang Yuwei/Xinhua via AP)](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/PD7FEVP7TLUTXJJKMFLNY27EWQ.jpg?smart=true&auth=aad3a5987d9de7476cfb35cfce2ffb0c630dfe5aecaeb048a3b3a20560e5ba41&width=400&height=225)
A health worker holds a sample of a potential Covid-19 vaccine at a Sinopharm production plant. AP
A health worker holds a sample of a potential Covid-19 vaccine at a Sinopharm production plant. AP
Volunteers are indispensable to vaccine discovery
Some 5,000 people enlisted for the UAE's last-phase clinical trial and we are all in their debt