- Source: CNN " data-fave-thumbnails="{"big": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/200220164113-coronavirus-how-it-unfolded-explainer-thumbnail-lon-orig.jpg?q=x_0,y_0,h_2246,w_3991,c_crop/h_540,w_960" }, "small": { "uri": "https://media.cnn.com/api/v1/images/stellar/prod/200220164113-coronavirus-how-it-unfolded-explainer-thumbnail-lon-orig.jpg?q=x_0,y_0,h_2246,w_3991,c_crop/h