The document discusses communicable diseases, their causes, definitions, outbreaks, transmission, prevention and control. It defines key terms like epidemic, endemic, pandemic, host, carrier, reservoir, vector, immunity and modes of transmission. It outlines steps for managing disease outbreaks including preparation, detection, response and evaluation. It also discusses emerging/reemerging diseases and global disease eradication efforts. Nurses play an important role in communicable disease control through health education, surveillance and working with at-risk communities.