Scientists race to find 'warm' Covid vaccine to solve issue of cold storage

With potential injectable vaccines estimated to be out of reach for two-thirds of world's population, scientists hope to find less-heat-sensitive formulations

News that one of the potential coronavirus vaccines had at least a 90% efficacy rate was a victory for science", said K Srinath Reddy, a cardiologist and president of the Public Health Foundation of India. But it meant little to his country's 1.3 billion citizens.

For us, the Pfizer vaccine is more of a scientific curiosity than a practical possibility," Reddy said.