by Patrick GALEY PARIS, France (AFP) — Dogs can be trained to detect more than 90 percent of Covid-19 infections even when patients are asymptomatic, according to research published Monday, which authors hope could help replace the need to quarantine new arrivals. Using their remarkable sense of smell — which can pick up the equivalent of half a teaspoon of sugar in an olympic-sized swimming pool — dogs have already shown that they can sniff […]