Boris Johnson says he does not remember ever being warned about asymptomatic transmission of Covid-19 within Germany during the early stages of the pandemic. The former prime minister was grilled about his knowledge of a meeting in January, in which the former chief medical officer warned the then-health secretary about asymptomatic spread of the virus. Report by Brooksl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn