The emergence of new variants has raised questions about whether previous infection offers protection and what the future holds
An electron microscope image made available by the National Institute of Allergy and Infectious Diseases in the US shows the Covid-19 virus. New variants are emerging as the virus constantly mutates.An electron microscope image made available by the National Institute of Allergy and Infectious Diseases in the US shows the Covid-19 virus. New variants are emerging as the virus constantly mutates.
We are also increasingly hearing about new Omicron subvariants with names such as BA.2, BA.4 and now BA.5. The concern is these subvariants may lead to peopleWhy are we seeing more of these new subvariants? Is the virus mutating faster? And what are the implications for the future of Covid?All viruses, Sars-CoV-2 included, mutate constantly. The vast majority of mutations have little to no effect on the ability of the virus to transmit from one person to another or to cause severe disease..
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