An Expert Explains: Challenge ahead in vaccinating India
Covid-19 vaccines are being developed at a pace faster than for any other disease, yet there are shortages. India will look forward to procuring more vaccines and a proposed IP waiver from global manufacturers.
Covid-19 vaccines were developed at an astonishing pace. No other disease has seen so many vaccines developed so fast. Out of 250 candidate vaccines that were being developed, at least 10 have already been approved for emergency use in different parts of the world. Most of the first flush of approved vaccines were based on two technologies never used in humans earlier. These include mRNA-based vaccines of Pfizer-BioNTech, Moderna, and the viral vector-based vaccines of Astra Zeneca/Oxford University, Sputnik V, Janssen of Johnson and Johnson, and Coronavac of CanSino Biologics from China.