Streetdirectory.com Communicable Disease Centre (CDC) is in Novena, a busy district near Singapore's Central Business District. At the centre of Novena is Tan Tock Seng Hospital, one of Singapore's oldest hospitals and its second largest. Around the hospital are medical centres and research institutes, such as the Communicable Disease Centre and National Neuroscience Institute, which comprise laboratories and offices. Novena is also where people go to for sports gear and equipment. Velocity, a large shopping centre specializing in sportswear, is located here, amidst office buildings and private apartments.