"There's such a vast amount of virus at the moment. And clearly it is changing, and it's doing new and unexpected things," Christopher Dye, an epidemiologist and senior research fellow at the ...

and how frequently dairy farm workers and other people are exposed," Christopher Dye, an infectious disease expert and professor at the University of Oxford, told Business Insider in an email.

This Certificate was given to my great grandfather Christopher Dye when he left the Training Ship "Formidable" off Portishead, Bristol. He was there between 1882 and 1885, from age 13 to 16.