The warning comes as the US published its new bio-defense policy in an attempt to protect against the threat of bio-chemical weapons and outbreaks of infectious disease. In the last six months alone, Zimbabwe has been hit by a wave of cholera, the DRC has seen a fresh outbreak of Ebola, and the Black Death has returned to Madagascar. And earlier this week the first ever Brit to be infected by monkeypox

revealed her fears she may have passed on the deadly virus to her husband. Professor Wyn Rees, a security expert at the University of Nottingham, told Daily Star Online that spreading diseases via commercial planes was the “Holy Grail” of terror. He told us: “There are always lots of warnings with these kinds of things, be it bird flu or Ebola or monkeypox. “Because the fear is based on the fact they can cross borders very quickly. READ MORE