<P> The WHO regularly publishes a World Health Report, its leading publication, including an expert assessment of a specific global health topic . Other publications of WHO include the Bulletin of the World Health Organization, the Eastern Mediterranean Health Journal (overseen by EMRO), the Human Resources for Health (published in collaboration with BioMed Central), and the Pan American Journal of Public Health (overseen by PAHO / AMRO). </P> <P> The World Health Organization is a member of the United Nations Development Group . </P> <P> As of 2016, the WHO has 194 member states: all of them Member States of the United Nations except for the Cook Islands and Niue . (A state becomes a full member of WHO by ratifying the treaty known as the Constitution of the World Health Organization .) As of 2013, it also had two associate members, Puerto Rico and Tokelau . Several other countries have been granted observer status . Palestine is an observer as a "national liberation movement" recognized by the League of Arab States under United Nations Resolution 3118 . The Holy See also attends as an observer, as does the Order of Malta . In 2010, Taiwan was invited under the name of "Chinese Taipei". </P> <P> WHO Member States appoint delegations to the World Health Assembly, WHO's supreme decision - making body . All UN Member States are eligible for WHO membership, and, according to the WHO website, "other countries may be admitted as members when their application has been approved by a simple majority vote of the World Health Assembly". Liechtenstein is currently the only UN member not in the WHO membership . </P>

How many countries are members of world health organization