CRP and COVID-19: Decreased ratio of lymphocytes in mycoplasma pneumonia patients (79/95, 83.2%) was more common than COVID-19 (14/80, 17.5%) (p < 0.0001), and elevated levels of CRP in mycoplasma pneumonia patients (66/95, 69.5%) was also more common than COVID-19 (20/80, 25%) (p < 0.0001).