database (GADM; www.gadm.org).
Fig 2  The distribution of COVID-19 cases across biome types based on the relationship between mean temperature and annual precipitation.
Biome classification is based on the scheme by Whittaker [20]. (TR) tropical rain forest; (TS) tropical seasonal forest/savanna; (TE) temperate rain forest; (SD) subtropical desert; (TD) temperate deciduous forest; (WS) woodland/shrubla