![COVID-19 vaccines vs the Delta variant: How effective are they?](/content/images/size/w600/2021/09/coronavirus-vaccines.jpg)
COVID-19 vaccines vs the Delta variant: How effective are they?
In 10 seconds? Current Covid-19 vaccines’ efficacy is lower against the rapidly spreading Delta variant than previous strains, researchers suggested. What have researchers discovered? In a pre-print published study (not peer-revi...