New Delhi, Jan. 21 -- Just when the newly-developed vaccines against Covid-19 had given some hopes to the world battling the pandemic, a new study pointed out that current vaccines may not work against future strain of the virus.
It also said that some coronaviruses - the family of viruses which includes the one causing Covid-19 - can evolve to escape recognition by the host immune system.
The study, published in the journal eLife, noted that if the novel coronavirus SARS-CoV-2 which causes Covid-19 evolves in the same way as other pathogens, current vaccines against the virus may become outdated, requiring new ones to be made to match future strains.
"Some coronaviruses are known to reinfect humans, but it is not clear to what extent, t...