Leucocyte counts and percentages
WBC counts, and percentages of lymphocytes, monocytes, and neutrophils and their absolute numbers in patients with COVID-19 were summarized in Table 1. Accordingly, there was no difference in total WBC numbers between the groups. The lymphocyte percentage was found to be significantly lower in the moderate and severe groups compared to the mild group (p<0.01, Table 1). Absolute lymphocyte count was lower in the moderate and severe group compared to the mild group, but it reached statistical significance only between the mild and severe group (p=0.02, Table 1). The percentage of monocytes was higher in mild COVID-19 patients compared to moderate and severe patients (p<0.05). However, there was no statistically significant difference between the groups in absolute monocyte counts. The percentage of neutrophils percentage was low in the mild group. Statistical difference was found only between mild and severe groups (p <0.01, Table 1). In addition to the increase in percentages of neutrophils, absolute number of neutrophils was also found to be statistically high in the moderate and severe groups in comparison to the mild group (p <0.01, Table 1).
Thus, it has been shown that lymphopenia deepened and granulocytosis increased, as both percentage and absolute number proportionally to the severity of the disease in accordance with the literature (15). There was no difference in either WBC counts or percentages of leukocyte subsets when patients were classified according to their co-morbidities.