Catastrophe évolutive, quelle pourrait-être l’influence des conditions météorologiques sur l’évolution de la pandémie CoViD-19 ?

One of the classic factors in disaster management is knowing its scalability. What is it in the case of CoViD-19? A questionnaire was sent to our colleagues from 14 countries located in the intertropical hot zone to establish a comparison with two temperate countries. We were able to collect the recorded cases and weather conditions from six French islands and six French-speaking African countries for which the government barrier measures were identical to those taken in Italy and France. We highlighted the positive role of temperature, which decreases the diffusion and the lethality of CoViD-19. In the French tropical islands, imported cases (by air, ships) represented a large percentage of cases (33% on average) which had no influence on the viral spread, which remained low. The probable seasonality of CoViD-19 should raise concern for its return at the start of winter and encourage better preparation of personnel and resources.