Strange, on arrival at EZE they only did the nose and pushed the swab quite far back in order to get the throat - or part between the nose and throat - as well. Happened to all in my group and also another friend as well. Apparently not everyone gets the advertised saliva test...I have had 2 PCRs in Brazil and 1 in BA. At GRU they did nose and throat, at Porto Alegre they only did nose (technician said they no longer require throat); in BA they did both nose and throat. In all cases they used different swaps for the nose and throat, not the same.