Besides the two vaccines in use in India, three vaccine candidates look promisingThe unprecedented rise in COVID-19 cases has changed vaccine hesitancy to vaccine advocacy. We need about 1,500 million doses (two doses per person) to vaccinate the target population. BB is expanding its capacity and hopes to reach a target of 50-60 million doses a month in four months. The DNA vaccine, if successful, will be the first DNA vaccine that goes into human application for any disease. Viral variants will evolve, especially under vaccine pressure, and pose challenges to vaccine efficacy.

Source: The Hindu May 10, 2021 18:45 UTC