WHO estimates that 1.5 million people died from diarrheal diseases in 2012, which comprises about 2.7 percent of deaths. Fortunately, thatâs down from 2.2 million in 2000. Diarrheal disease is the second top killer of children under age five. Tragically, about 760,000 children die from diarrheal diseases each year.
1 After 20 minutes turn the oven down to 325 degrees F. and roast until the desired internal temperature is reached (see guide below). 2  For medium-rare this will take approximately 15 minutes per pound. 3  Transfer to a large platter, and let the prime rib rest, loosely covered with foil for 30 minutes before serving. When the oven is hot, put the roast in and cook for 20 minutes to sear the outside of the roast. 2  After 20 minutes turn the oven down to 325 degrees F. and roast until the desired internal temperature is reached (see guide below). 3  For medium-rare this will take approximately 15 minutes per pound.
4 Place the roast fat side up and rib bones down in a roasting pan. Insert a meat thermometer into the thickest part of the roast, making sure that the thermometer isn't touching a bone. 5 After browning the roast at a 500Â°F temperature in the oven for 15 minutes, reduce the oven temperature to 325Â°F.To figure out the total cooking time, allow about 13-15 minutes per pound for rare and 15-17 minutes per pound for medium rare. prime rib roast is too expensive to wing it. Error on the rare side, you can always put the roast back in the oven to cook it more if it is too rare for your taste. Roast in oven until thermometer registers 115Â°-120Â°F for rare or 125Â°-130Â°F for medium.