Coronavirus live news: Turkey imposes strict new curfews as cases surge; Italy's death toll rises by 672 ed.2

Turkey announces weekday curfew and weekend lockdown; Italy reports 672 new Covid-related deaths, a rise on Sunday's figureModerna Covid vaccine has 94% efficacy, final results confirmExperts warn of cases surge after widespread Thanksgiving travelSpain appeals for ‘common sense' after shopping crowd scenesSri Lanka prisoners killed in riot over coronavirus conditionsSee all our coronavirus coverage 7.38pm GMT Spending time with friends and family at Christmas is “not worth putting them or yourself at risk”, according to the head of the World Health Organization.Tedros Adhanom Ghebreyesus, the body's director general, said people should consider whether travelling during the festive period is necessary. Urging “extreme caution”, he said that “gains can easily be lost”. 7.22pm GMT Colombia will keep its land and river borders closed until 16 January in an attempt to stem Covid's spread.The country has seen illegal crossings since it closed its borders in March, with many migrants returning home from Venezuela amid its social and economic crisis.