The health communication knowledge is based on several complementary concepts:
	Health literacy Health literacy can be defined as the capacity that an individual has to access and effectively use health-related information.
	Health education Health education aims to influence a person’s knowledge, attitudes and behaviours connected to health in a positive way.
	Social marketing Using social marketing tools to conduct public health improvement programs can help to clarify goals and improve success.
	Risk communication Risk communication is a sustained communication process with a diverse audience about the likely outcomes of health and behavioural attitudes.
	Crisis communication While risk communication is ongoing, crisis communication is a reactive communication effort in the face of an unforeseen event.
	Health advocacy Advocacy is one strategy to raise awareness and promote health and access to quality health care at the individual and community levels.
	Outbreak communication An effective outbreak communication can help to bring an outbreak under control as quickly as possible, with as little social disruption as possible.