by Paul RICARD Agence France-Presse PARIS, France (AFP) – The Delta variant of the coronavirus, first identified in India, is a cause for global concern with studies showing it is more contagious and resistant to vaccines than other forms of Covid. But there is also evidence vaccines retain important effectiveness against Delta after two doses. Here is what we know about how variants respond to jabs. Fewer antibodies… Several lab tests show that the Delta […]