This animation shows the Leiden Communities on the set of countries identified as constant cases across the years 1981-2024. (For a full list of countries included, see the Country List below.)
Note: for this visualization, in order for some years (e.g. 1992) to show 4 communities, I had to add a dummy location (Antartica) in community 4 for the first year (1981). Really, 1981 only had 3 communities.
The full list of constant cases used in this analysis are shown below.
| Country | |
|---|---|
| 1 | Afghanistan, Islamic Republic of |
| 2 | Albania |
| 3 | Algeria |
| 4 | Angola |
| 5 | Argentina |
| 6 | Armenia, Republic of |
| 7 | Australia |
| 8 | Austria |
| 9 | Azerbaijan, Republic of |
| 10 | Bahrain, Kingdom of |
| 11 | Bangladesh |
| 12 | Barbados |
| 13 | Belarus, Republic of |
| 14 | Belize |
| 15 | Benin |
| 16 | Bolivia |
| 17 | Brazil |
| 18 | Bulgaria |
| 19 | Burkina Faso |
| 20 | Burundi |
| 21 | Cabo Verde |
| 22 | Cambodia |
| 23 | Cameroon |
| 24 | Canada |
| 25 | Central African Republic |
| 26 | Chad |
| 27 | Chile |
| 28 | China, People’s Republic of |
| 29 | Colombia |
| 30 | Congo, Democratic Republic of the |
| 31 | Congo, Republic of |
| 32 | Costa Rica |
| 33 | Côte d’Ivoire |
| 34 | Cuba |
| 35 | Cyprus |
| 36 | Denmark |
| 37 | Djibouti |
| 38 | Dominican Republic |
| 39 | Ecuador |
| 40 | Egypt, Arab Republic of |
| 41 | El Salvador |
| 42 | Equatorial Guinea, Republic of |
| 43 | Estonia, Republic of |
| 44 | Ethiopia, The Federal Democratic Republic of |
| 45 | Fiji, Republic of |
| 46 | Finland |
| 47 | France |
| 48 | Gabon |
| 49 | Gambia, The |
| 50 | Georgia |
| 51 | Germany |
| 52 | Ghana |
| 53 | Greece |
| 54 | Grenada |
| 55 | Guatemala |
| 56 | Guinea |
| 57 | Guinea-Bissau |
| 58 | Guyana |
| 59 | Haiti |
| 60 | Honduras |
| 61 | Hong Kong Special Administrative Region, People’s Republic of China |
| 62 | Hungary |
| 63 | Iceland |
| 64 | India |
| 65 | Indonesia |
| 66 | Iran, Islamic Republic of |
| 67 | Iraq |
| 68 | Ireland |
| 69 | Israel |
| 70 | Italy |
| 71 | Jamaica |
| 72 | Japan |
| 73 | Jordan |
| 74 | Kazakhstan, Republic of |
| 75 | Kenya |
| 76 | Korea, Democratic People’s Republic of |
| 77 | Korea, Republic of |
| 78 | Kuwait |
| 79 | Lao People’s Democratic Republic |
| 80 | Latvia, Republic of |
| 81 | Lebanon |
| 82 | Liberia |
| 83 | Libya |
| 84 | Lithuania, Republic of |
| 85 | Madagascar, Republic of |
| 86 | Malawi |
| 87 | Malaysia |
| 88 | Mali |
| 89 | Mauritania, Islamic Republic of |
| 90 | Mauritius |
| 91 | Mexico |
| 92 | Moldova, Republic of |
| 93 | Mongolia |
| 94 | Morocco |
| 95 | Mozambique, Republic of |
| 96 | Myanmar |
| 97 | Nepal |
| 98 | Netherlands, The |
| 99 | New Caledonia |
| 100 | New Zealand |
| 101 | Nicaragua |
| 102 | Niger |
| 103 | Nigeria |
| 104 | Norway |
| 105 | Oman |
| 106 | Pakistan |
| 107 | Panama |
| 108 | Papua New Guinea |
| 109 | Paraguay |
| 110 | Peru |
| 111 | Philippines |
| 112 | Poland, Republic of |
| 113 | Portugal |
| 114 | Qatar |
| 115 | Romania |
| 116 | Russian Federation |
| 117 | Rwanda |
| 118 | Samoa |
| 119 | Saudi Arabia |
| 120 | Senegal |
| 121 | Sierra Leone |
| 122 | Singapore |
| 123 | Somalia |
| 124 | Spain |
| 125 | Sri Lanka |
| 126 | Sudan |
| 127 | Suriname |
| 128 | Sweden |
| 129 | Switzerland |
| 130 | Syrian Arab Republic |
| 131 | Tajikistan, Republic of |
| 132 | Tanzania, United Republic of |
| 133 | Thailand |
| 134 | Togo |
| 135 | Tonga |
| 136 | Trinidad and Tobago |
| 137 | Tunisia |
| 138 | Türkiye, Republic of |
| 139 | Turkmenistan |
| 140 | Uganda |
| 141 | Ukraine |
| 142 | Union of Soviet Socialist Republics (USSR) |
| 143 | United Arab Emirates |
| 144 | United Kingdom |
| 145 | United States |
| 146 | Uruguay |
| 147 | Uzbekistan, Republic of |
| 148 | Venezuela, República Bolivariana de |
| 149 | Vietnam |
| 150 | Zambia |
| 151 | Zimbabwe |