The British journalist Andrew Marr has caught Covid after being double vaccinated. He believe he caught the Delta variant of coronavirus during the summit of G7 (Group of Seven) nations, in Cornwall in June.
. . . early symptoms of this new strain, first identified in India, are very, very similar to those of a light cold - and it is incredibly infectious, so beware.
www.bbc.com - Marr on catching Covid after being double vaccinated