CBS This Morning – Journalists documenting Wuhan coronavirus outbreak disappear

China is being accused of censoring critical coronavirus data, which the World Health Organization now calls a grave threat to the world. According to scientists writing for the Lancet Medical Journal, Chinese authorities had preliminary information on the virus for more than two weeks before it was officially released. Debora Patta reports on the disappearance of two citizen journalists who were documenting the case in Wuhan.