What is a cna?A cna, or certified nursing assistant, works in a healthcare setting to provide basic care to patients.From education and training, to certification and career development †partnering with individuals, educators & employers to serve allied health since 1989.Contact nha today!Breaking news in singapore and asia, top stories from around the world;Business, sport, lifestyle, technology, health and commentary sections.Watch cna's 24/7 livestream.