Today co-host Savannah Guthrie revealed during the morning show this morning that she is pregnant with her second child, and she will bow out of NBC’s coverage of the Summer Olympics this summer in Rio due to her doctor’s concerns over the Zika virus. Matt Lauer, Meredith Vieira and Guthrie had been tapped to host NBC's coverage of the Opening Ceremony of Rio Games on August 5 in Rio de Janeiro.