outbreak References Quizzes 44 Questions from Britannica’s Most Popular Health and Medicine Quizzes outbreak epidemiology Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Who Can Declare a Pandemic and What Criteria Are Required for an Outbreak to Be Called a Pandemic?…phase, is declared when an outbreak is characterized by globally widespread and sustained disease transmission among humans. Read More…phase, is declared when an outbreak is characterized by globally widespread and sustained disease transmission among humans. Read More