The infection was previously considered very rare but cases have ballooned during the pandemic, usually striking patients after recovery from Covid-19.

Previously very rare, mucormycosis is highly aggressive and surgeons sometimes have to remove patients' eyes, nose and jaw to stop it reaching the brain.

The deal will allow anybody living in the EU's 27 countries to secure a digital health pass by the end of June that displays their vaccination status, results of Covid-19 tests or recovery from a coronavirus infection.