Table 3.
COVID-19 case clusters identified by the spatio-temporal Poisson scan statistic.
| Month | Duration | Localities | Risk | P-value (Monte-Carlo) |
| February | 4 | South Korea | 3.4422 | 0.001 |
| March | 6 | Bahamas, Canada, Colombia, Costa Rica, Cuba, Dominican Republic, Guatemala, Honduras, Haiti, Jamaica, Mexico, Nicaragua, Panama, El Salvador, United States. |
1.5693 | 0.001 |
| April | 8 | Russia, Mongolia, Kazakhstan. | 1.5687 | 0.001 |
| May | 9 | Bolivia, Brazil, Paraguay, Suriname, Guyana, Uruguay, Chile, Peru, Argentina, Trinidad and Tobago, Venezuela. |
1.3208 | 0.001 |
| June | 12 | Bolivia, Brazil, Paraguay, Uruguay, Chile, Peru, Argentina. | 1.1212 | 0.001 |
| July | 9 | India. | 1.1808 | 0.001 |
| August | 10 | India, Nepal. | 1.1186 | 0.001 |
| September | 12 | India, Nepal. | 1.0667 | 0.001 |
| October | 9 | Austria, Belgium, Switzerland, Czech Republic, Germany, Denmark, France, United Kingdom, Ireland, Liechtenstein, Luxembourg, Monaco, Netherlands, Norway, Poland. |
1.2416 | 0.001 |
| November | 12 | Austria, Bosnia and Herzegovina, Switzerland, Czech Republic, Germany, Croatia, Hungary, Italy, Liechtenstein, Poland, San Marino, Serbia, Slovakia, Slovenia |
1.1183 | 0.001 |
| December | 22 | Turkey | 1.1116 | 0.001 |