Routine blood tests in patients with viral colds show normal or decreased leukocytes, increased lymphocytes, and no elevated neutrophils, so they can be differentiated from the increased leukocytes and elevated neutrophils of blood tests in patients with bacterial colds. If during a dengue epidemic, leukocytes are normal or decreased and platelets are decreased, rule out dengue. If there is a significant drop in leukocytes during an influenza epidemic, rule out influenza. It is recommended to check for respiratory viruses by pharyngeal test strips in order to make a clear diagnosis and administer the appropriate medication. Viral colds do not require antibiotics, antibiotics are ineffective against viral colds, if the diagnosis is confirmed to be influenza A, influenza B and other influenza viruses caused by colds, you need to use symptomatic oseltamivir capsules or oseltamivir granules.