CCL2 and COVID-19: Increases in these have been associated with mortality only in COVID-19 patients (3), and our cohort confirms that CCL2/MCP-1 was also significantly increased in the COVID-19 patients who die (237.4 ± 12.4 vs. 421.9 ± 59.0 pg/ml CCL2 mean ± sem in COVID-19 survival vs. exitus; p = 0.018 Mann–Whitney test).