| | The United States has administered 503,480,667 doses of COVID-19 vaccines in the country as of Monday morning and distributed 609,589,955 doses, the U.S. Centers for Disease Control and Prevention said. | | | Spain's coronavirus infection rate exceeded 1,000 cases per 100,000 people for the first time on Monday, stoked by the fast-spreading Omicron variant, although hospitals were under much less strain than in previous waves of the pandemic. | | | The following is a summary of some recent studies on COVID-19. They include research that warrants further study to corroborate the findings and that has yet to be certified by peer review. | | | Faced with the rapid spread of the Omicron variant, France will further tighten COVID-19 measures, but there will be no curfew for New Year's Eve and schools will reopen as planned in early January, the government said on Monday. | | | Paraguay has confirmed its first three cases of the Omicron variant of the coronavirus, its Health Ministry said on Monday, adding that the cases were detected in people who had traveled outside the country this month. | | | U.S. President Joe Biden on Monday pledged to ease a shortage of COVID-19 tests as the Omicron variant threatened to overwhelm hospitals and stifle travel plans as it spread across U.S. states this holiday week. | | | President Joe Biden said on Monday he would support an effort to shorten COVID-19 quarantine requirements for those who test positive for the novel coronavirus if U.S. health authorities recommend such a change. | | | England will not get any new COVID-19 restrictions before the end of 2021, British health minister Sajid Javid said on Monday, as the government awaits more evidence on whether the health service can cope with high infection rates. | | | The U.S. Centers for Disease Control and Prevention said on Monday it was investigating nearly 70 cruise ships after reports of COVID-19 cases on board, as the Omicron variant upended holiday travel over the Christmas weekend. | | | French Prime Minister Jean Castex and Health Minister Olivier Veran will give details on new measures in the fight against the COVID-19 epidemic at a news conference at 1915 CET (1815 GMT), Castex's office said on Monday. | | | | |