A U.S. medical expert has hailed the rollout of COVID-19 vaccines, saying they are the "biggest silver lining" in the fight against the pandemic, as he appealed for the public to get vaccinated earliest possible.
A U.S. medical expert has hailed the rollout of COVID-19 vaccines, saying they are the "biggest silver lining" in the fight against the pandemic, as he appealed for the public to get vaccinated earliest possible.