States turning down Covid-19 vaccine doses as US demand declines

Reduced demand comes as Joe Biden has announced a plan to vaccinate 70% of US adults by the Fourth of JulyDeclining demand for Covid-19 vaccines in the US is causing states across the country to refuse their full allocations of doses from the federal government, despite concerted efforts to raise national take-up rates.Reduced demand, which is contributing to a growing stockpile of doses, comes as nearly 46% of the US population has received at least one dose of a two-shot vaccine and about 34%