Molnupiravir "interferes with a part of the virus that is conserved across different variants -- specifically, the enzyme that it uses to copy its genetic material for replication", said Dr Conrad Chan, laboratory director at the Defence Medical and Environmental Research Institute from DSO.
British-Swedish biopharmaceutical firm AstraZeneca has in partnership with the University of Oxford rolled out human trials for booster shots against Beta Covid variant.
"We found that individuals showed very different immune responses from each other following Covid-19, with some people from both the symptomatic and asymptomatic groups showing no evidence of immune memory six months after infection or even sooner."
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