The good news is that the vaccines work against a new virus strain circulating in India that has spread to several other countries.
The bad news is it won¡¯t be only the new version of the pathogen to emerge from an outbreak of this scale, underscoring the urgency of mapping other possible variants that may be currently racing through India¡¯s tightly packed population of 1.4 billion people.
As infections surge by more than 300,000 cases for 14 straight days, pushing India¡¯s tally past 20 million, the country¡¯s limited ability to track new mutations emerging from its outbreak is a growing concern for scientists.
With your current subscription plan you can comment on stories. However, before writing your first comment, please create a display name in the Profile section of your subscriber account page.