| Entry into force: | 3 February 1977, in accordance with article 73 of the Constitution, for all members of the World Health Organization. |
| Registration: | 3 February 1977, No. 221. |
| Status: | ,Parties: 148. |
| Text: | United Nations, Treaty Series, vol. 1035, p. 315. |
Note: The amendments to articles 34 and 55 of the Constitution of the World Health Organization were adopted by the Twenty-sixth World Health Assembly by resolution WHA 26.37 of 22 May 1973.
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| Participant | Acceptance (A) |
| Afghanistan | 28 Feb 1975 A |
| Algeria | 6 Jun 1977 A |
| Andorra | 15 Jan 1997 A |
| Angola | 3 Mar 1977 A |
| Argentina | 4 Oct 1976 A |
| Armenia | 4 May 1992 A |
| Australia | 11 Mar 1975 A |
| Azerbaijan | 2 Oct 1992 A |
| Bahamas | 14 Dec 1976 A |
| Bahrain | 25 Jun 1975 A |
| Bangladesh | 26 Feb 1976 A |
| Barbados | 7 Jun 1974 A |
| Belgium | 6 Aug 1974 A |
| Belize | 23 Aug 1990 A |
| Benin | 24 Nov 1975 A |
| Bolivia | 17 Oct 1975 A |
| Bosnia and Herzegovina | 10 Sep 1992 A |
| Botswana | 4 Feb 1977 A |
| Brazil | 7 Aug 1974 A |
| Brunei Darussalam | 25 Mar 1985 A |
| Bulgaria | 27 Jan 1976 A |
| Burkina Faso | 20 Mar 1979 A |
| Cameroon | 30 May 1974 A |
| Canada | 12 Jun 1974 A |
| Cape Verde | 28 Dec 1977 A |
| Central African Republic | 13 Jan 1977 A |
| Chad | 3 Nov 1976 A |
| Chile | 14 Sep 1977 A |
| China | 5 Mar 1976 A |
| Comoros | 27 Jan 1977 A |
| Congo | 3 Jan 1977 A |
| Cook Islands | 9 May 1984 A |
| Côte d'Ivoire | 16 Dec 1977 A |
| Croatia | 11 Jun 1992 A |
| Cuba | 7 Feb 1977 A |
| Cyprus | 20 Jun 1975 A |
| Czech Republic3 | 22 Jan 1993 A |
| Democratic Republic of the Congo | 15 Jul 1976 A |
| Denmark | 7 Oct 1974 A |
| Dominican Republic | 16 Oct 1975 A |
| Ecuador | 12 Mar 1975 A |
| Egypt | 14 Jan 1974 A |
| El Salvador | 17 Oct 1975 A |
| Eritrea | 24 Jul 1993 A |
| Ethiopia | 9 Jan 1976 A |
| Fiji | 15 Nov 1973 A |
| Finland | 17 Jun 1974 A |
| France | 28 Jan 1975 A |
| Gambia | 25 Jan 1977 A |
| Georgia | 26 May 1992 A |
| Germany22,23 | 9 Jul 1975 A |
| Ghana | 22 Apr 1977 A |
| Greece | 4 Nov 1975 A |
| Grenada | 16 Jul 1976 A |
| Guatemala | 18 Dec 1978 A |
| Guinea | 22 Sep 1975 A |
| Guinea-Bissau | 18 Nov 1975 A |
| Guyana | 24 May 1974 A |
| Honduras | 8 Nov 1974 A |
| Iceland | 5 Dec 1975 A |
| Indonesia | 4 May 1977 A |
| Iraq | 28 Jan 1977 A |
| Ireland | 3 Mar 1975 A |
| Israel | 8 Sep 1976 A |
| Jamaica | 25 Mar 1977 A |
| Jordan | 30 Nov 1976 A |
| Kazakhstan | 19 Aug 1992 A |
| Kenya | 17 Sep 1976 A |
| Kuwait | 17 Jul 1975 A |
| Kyrgyzstan | 29 Apr 1992 A |
| Lao People's Democratic Republic | 28 Sep 1976 A |
| Latvia | 4 Dec 1991 A |
| Lesotho | 4 Feb 1977 A |
| Lithuania | 25 Nov 1991 A |
| Luxembourg | 22 Jun 1982 A |
| Madagascar | 27 Sep 1976 A |
| Malawi | 21 Oct 1974 A |
| Malaysia | 3 Jul 1975 A |
| Maldives | 16 Sep 1975 A |
| Mali | 27 Mar 1975 A |
| Malta | 19 Jul 1976 A |
| Marshall Islands | 5 Jun 1991 A |
| Mauritania | 21 Sep 1976 A |
| Mauritius | 26 Jan 1976 A |
| Mexico | 25 Jul 1975 A |
| Micronesia (Federated States of) | 14 Aug 1991 A |
| Monaco | 4 Nov 1975 A |
| Mongolia | 19 Jan 1977 A |
| Morocco | 30 Dec 1975 A |
| Mozambique | 9 Apr 1979 A |
| Myanmar | 30 Dec 1975 A |
| Nauru | 9 May 1994 A |
| Nepal | 10 Feb 1976 A |
| Netherlands24 | 27 Jan 1975 A |
| New Zealand | 19 Feb 1976 A |
| Nicaragua | 5 Nov 1976 A |
| Niger | 11 Jul 1974 A |
| Nigeria | 15 Oct 1975 A |
| Niue | 5 May 1994 A |
| Norway | 14 Nov 1975 A |
| Oman | 10 Apr 1974 A |
| Pakistan | 29 Apr 1976 A |
| Palau | 9 Mar 1995 A |
| Panama | 18 Feb 1975 A |
| Paraguay | 15 Jan 1976 A |
| Philippines | 17 Sep 1976 A |
| Portugal | 20 Feb 1975 A |
| Qatar | 8 Dec 1975 A |
| Republic of Korea | 16 Nov 1976 A |
| Republic of Moldova | 4 May 1992 A |
| Romania | 18 Jul 1977 A |
| Rwanda | 19 Nov 1976 A |
| Samoa | 6 Jan 1976 A |
| Sao Tome and Principe | 16 Feb 1977 A |
| Saudi Arabia | 13 Jan 1977 A |
| Senegal | 4 Feb 1977 A |
| Singapore | 22 Sep 1975 A |
| Slovakia3 | 4 Feb 1993 A |
| Slovenia | 7 May 1992 A |
| Somalia | 8 Oct 1975 A |
| Spain | 10 Oct 1975 A |
| Sri Lanka | 12 Nov 1974 A |
| Sudan | 3 Jun 1977 A |
| Suriname | 27 Jan 1977 A |
| Swaziland | 18 Nov 1975 A |
| Sweden | 13 May 1974 A |
| Switzerland | 21 Aug 1974 A |
| Syrian Arab Republic | 18 Jun 1975 A |
| Tajikistan | 4 May 1992 A |
| Thailand | 27 Jan 1975 A |
| the former Yugoslav Republic of Macedonia | 22 Apr 1993 A |
| Togo | 16 Jan 1975 A |
| Tonga | 8 Feb 1977 A |
| Trinidad and Tobago | 30 Jan 1975 A |
| Tunisia | 6 Jan 1976 A |
| Turkmenistan | 2 Jul 1992 A |
| Tuvalu | 7 May 1993 A |
| Uganda | 24 Nov 1975 A |
| United Arab Emirates | 2 Jul 1974 A |
| United Kingdom of Great Britain and Northern Ireland | 23 Jul 1974 A |
| United Republic of Tanzania | 6 Jan 1976 A |
| United States of America19 | 19 May 1975 A |
| Uruguay | 10 Apr 1978 A |
| Uzbekistan | 22 May 1992 A |
| Venezuela | 23 Jul 1975 A |
| Viet Nam25 | 23 Feb 1977 A |
| Yemen26 | 3 Feb 1977 A |
| Yugoslavia | 22 Apr 1975 A |