A new study that found traces of coronavirus in US blood samples from December last year is adding to the growing evidence that the virus was circulating for months before China announced its existence, casting more shadows over the truth about the pandemic and fuelling suspicions of a cover-up by Beijing. Claims the global outbreak began in a livestock market in Wuhan last winter have crumbled in the face of scientific evidence proving the virus was all over the Western world weeks and even months before China declared the first cases to the World Health Organization on December 31. Research...