Half of US adults could have a Covid-19 vaccine dose by the weekend, but experts say it’s too soon to declare victory

The US is on track to vaccinate half of all adults by the weekend with at least one Covid-19 shot, according to a White House adviser, but that does not mean the country is finished with the pandemic.The US is on track to vaccinate half of all adults by the weekend with at least one Covid-19 shot, according to a White House adviser, but that does not mean the country is finished with the pandemic.