tina krause has the story from london. >> 2-year-old fraya is on the hunt and keeps sniffing until shes her target. she's detecting malaria, a disease that infects more than 200 million people around the world every year. >> we find that dogs are able to detect a difference between socks that have the malaria parasite and children that are malaria free. >> reporter: british researchers collected socks from west africa, some worn by children t. >> the dogs are picking it up so quickly and so easily, so if you have people carrying malaria parasites, they probably have a really big odor signal. >> reporter: though in the early stages, scientists believe dogs could be trained to smell the scent of the deadly disease on people. >> the best use of these dogs is ports of entry. airports, sea ports, or land ports. >> reporter: experts say since mosquitoes won't go away, it's critical to identify people carrying malaria to stop the disease from spreading. tina krause, cbs news. >>> still ahead, martian visitor, a nasa spacecraft set to land on the red planet next week for a historic mission. pl

tina krause, cbs news. >>> coming up first on "cbs this morning," da vinci code author dan brown joinsn studio 57 revea a coating will treat your st nausea, heartburn, indigestion, upset stomach, diarrhea.♪ try new pepto with ultra coating. fit, it continues to pay paramedics while we're on break. second, it ensures the closest ambulance can respond if you call 9-1-1. vote yes on 11. here are the facts.leading attacks against prop c. the city's chief economist says prop c will "reduce homelessness" by creating affordable housing, expanding mental-health services, and providing clean restrooms and safe shelters with independent oversight, open books, and strict accountability measures to make sure every penny goes to solving our homeless crisis. vote yes on c. endorsed by the democratic party, nancy pelosi, and dianne feinstein. proposition 11 "a common sense solution" to protect public safety. president trump was in florida last night kicking off his final campaign push before next week's midterm elections. at a rally outside ft. myers, mr. trump told supporters the nation is under att