Our little one contracted pneumonia at the beginning of the month, recovered after over a week of treatment, and was discharged from the hospital. At home, they took ceftriaxone for several days, but on the third day, a feverish symptom appeared. Diagnosed with tonsillitis, the fever subsided after taking medication. However, yesterday morning, they experienced coughing and fever again, with the highest body temperature reaching 41 degrees. Blood tests showed a low white blood cell count and a slightly elevated C-reactive protein, indicating a viral infection. It is recommended to take oseltamivir phosphate granules for antiviral treatment, along with antiviral oral liquid and lung power cough mixture to clear the lungs, and to drink plenty of water. Ibuprofen can be taken to reduce fever if the body temperature exceeds 38.5 degrees.