on the steps of the us capitol to mourn the more than 800,000p americans now known to have died from covid 19. the tally is the highest for any country. the us is facing a new wave of infections, with the omicron variant spreading rapidly. more than 60% of americans have been vaccinated, but millions have chosen not to be jabbed. the majority of deaths have been among the unvaccinated. the head of the world health organization has issued a new warning about omicron saying it is spreading far more quickly than any other to date. stephanie prentice reports. it s been three weeks since the first detection of omicron, but it is likely to be in most countries by now. that s according to the world health organization, pushing for increased vaccination, and forced mask wearing and further social distancing. as the new variant move swiftly around the world. it is