Sniffer dogs trained to detect the coronavirus disease (COVID-19) in highly frequented places in Santiago A sniffer dog trained to detect the coronavirus disease (COVID-19) in highly frequented places works, at the International Airport of Santiago, Chile, December 21, 2020. REUTERS/Ivan Alvarado IVAN ALVARADO
Foto: IVAN ALVARADO/REUTERS/PIXSELL/REUTERS/PIXSELL
The outbreak of the coronavirus disease (COVID-19), in Vienna Fantasy, a sniffer dog trained to detect the coronavirus disease (COVID-19), reacts with a trainer during a news conference in Vienna, Austria December 14, 2020. REUTERS/Leonhard Foeger LEONHARD FOEGER
The outbreak of the coronavirus disease (COVID-19), in Vienna Fantasy, a sniffer dog trained to detect the coronavirus disease (COVID-19), sits next to a trainer during a news conference in Vienna, Austria December 14, 2020. REUTERS/Leonhard Foeger LEONHARD FOEGER
Presentation of Fantasy, a sniffer dog trained to detect COVID-19, in Vienna Austrian Defence Minister Klaudia Tanner applauds during a presentation of Fantasy, a sniffer dog trained to detect the coronavirus disease (COVID-19) in Vienna, Austria December 14, 2020. REUTERS/Leonhard Foeger LEONHARD FOEGER
The outbreak of the coronavirus disease (COVID-19), in Vienna Fantasy, a sniffer dog trained to detect the coronavirus disease (COVID-19), reacts with a trainer during a news conference in Vienna, Austria December 14, 2020. REUTERS/Leonhard Foeger LEONHARD FOEGER
The outbreak of the coronavirus disease (COVID-19), in Vienna Fantasy, a sniffer dog trained to detect the coronavirus disease (COVID-19), lies on the floor during a news conference in Vienna, Austria December 14, 2020. REUTERS/Leonhard Foeger LEONHARD FOEGER