Colombia will keep its land and river borders closed until March 1 as it tries to curb the spread of coronavirus, its migration agency said on Friday, following a decision to extend a so-called selective quarantine through February. The Andean country, which closed its borders in March last year, was due to open its borders on Saturday. It is the top destination for Venezuelan migrants fleeing the long-running social and economic crisis at home. More than 1.7 million Venezuelans are currently in Colombia. International air travel, which resumed in September, will not be affected by the decision to close the mentioned borders.