US to put more countries under COVID 'do not travel' advisory
Most Americans were already prevented from traveling to much of Europe because of COVID-19 restrictions.
A healthcare worker shows a vial and a box of the AstraZeneca coronavirus disease (COVID-19) vaccine, as vaccinations resume after a brief pause in their use over concern for possible connection to blood clots, in Turin, Italy, March 19, 2021.(photo credit: REUTERS/MASSIMO PINCA/FILE PHOTO)
