World Health Day international, regional and local events on the Day related to a particular theme. World Health Day is acknowledged by various governments and non-governmental organizations with interests in public health issues, who also organize activities and highlight their support in media reports, such as the Global Health Council. World Health Day is one of eight official global health campaigns marked by WHO, along with World Tuberculosis Day, World Immunisation Week, World Malaria Day, World No Tobacco Day, World AIDS Day, World Blood Donor Day, and World Hepatitis Day. In 2006, World Health Day was devoted to the health workforce crisis, or
World Health Day of Yoga as a part of healthy living. The event focused on prevention and not just medical treatment of chronic diseases, which remain unaffordable to many people. The theme of World Health Day 2013, marked on 7 April 2013, was the need to control raised blood pressure (hypertension) as a "silent killer, global public health crisis". The slogan for the campaign was "Healthy Heart Beat, Healthy Blood Pressure”. The WHO reports hypertension – which is both preventable and treatable – contributes to the burden of heart disease, stroke and kidney failure, and is an important cause of premature death and