The Latest: Rio’s Carnival site hosts drive-thru vaccines

RIO DE JANEIRO — Normally, Rio de Janeiro’s Sambadrome would be preparing for its greatest time of the year: The world’s most famous Carnival parade.But a week before the start, the coronavirus pandemic has replaced the pageantry. The celebration is on hold until next year as Rio struggles with a rise in coronavirus cases. The city on Saturday opened a drive-thru immunization station at the Sambadrome, where a line of cars queued up on a broad avenue built for floats.“Thi