Still coughing frequently after turning from COVID-positive to negative

After recovering from a positive to negative test result for COVID-19, patients often experience persistent coughing, which is generally considered part of the body's recovery process. Patients need not worry excessively; maintaining healthy lifestyle habits can help alleviate symptoms. If the cough is severe, it is recommended that patients seek medical attention promptly and take medication under a doctor's guidance.

COVID-19 refers to infection caused by the novel coronavirus, a highly contagious disease that primarily affects the respiratory system. Symptoms may include fatigue, fever, dry cough, and reduced or lost sense of smell. The virus mainly spreads through direct transmission, aerosol transmission, and contact transmission.

Persistent coughing after recovery from a novel coronavirus infection is typically part of the body’s healing process. This is because the Omicron variant replicates extensively in the upper respiratory tract, damaging mucosal cells. Immune cells eliminate the virus and naturally metabolize dead cells. Since the airway cannot accommodate large amounts of viruses and cellular debris, the respiratory tract secretes mucus to expel them via coughing. If the cough is mild, patients are advised to drink plenty of warm water, maintain a light diet, and avoid spicy or irritating foods such as chili peppers and garlic. For more severe coughing, patients should take expectorant medications—such as ambroxol hydrochloride tablets, compound licorice tablets, or Chuanbei Pipa syrup—under medical supervision.

It is important to note that even individuals who have previously been infected with the novel coronavirus may still experience reinfection or test positive again. Therefore, patients are advised to avoid unnecessary outings. If going out is necessary, proper personal protective measures should be taken.