in the last hour, the director general of the world health organization has said that the omicron variant is putting an enormous strain on health care systems and staff around the world. tedros ghebreyesus told a press conference in geneva that it was time for rich countries to turn their backs on short term nationalism and end global vaccine inequality. delta and omicron are twin threats that are delta and omicron are twin threats that are driving delta and omicron are twin threats that are driving up delta and omicron are twin threats that are driving up cases delta and omicron are twin threats that are driving up cases to - delta and omicron are twin threats that are driving up cases to recordl that are driving up cases to record nunrbers that are driving up cases to record numbers. which that are driving up cases to record numbers. which again that are driving up cases to record numbers. which again is - that are driving up cases to record numbers. which again is leadi