A top public health official in the United States has warned that the country is "failing" on Covid-19, after the country recorded its highest daily case load in six months. "We should not really have ever got to the place we are," Francis Collins, director of the National Institutes of Health, said on ABC's "This Week." "In that regard, yes, we are failing." A surge in the highly transmissible Delta variant has brought a slew of bad news: total daily new cases have soared to 118,000, their highest since February; deaths are up 89% over the past two weeks, even while slightly declining around the world; and children's hospitals in US states like Florida are being overwhelmed as young people are increasingly affected.