What causes recurrent fever in acute respiratory tract infections?

Fever generally refers to an elevated body temperature. Recurrent fever associated with acute respiratory tract infections may be related to environmental exposure, viral mutations, infections by multiple pathogens, complications, or immune system issues. A detailed analysis is as follows:

1. Environmental exposure: Certain environmental factors may lead to recurrent fever in acute respiratory tract infections. For example, prolonged exposure to polluted air or close contact with infected individuals may increase the risk of reinfection.

2. Viral mutation: Acute respiratory tract infections are usually caused by viruses such as influenza virus, adenovirus, and coronavirus. These viruses may mutate, making it difficult for the immune system to completely eliminate the infection, thereby leading to recurrent fever.

3. Infection by multiple pathogens: Fever from acute respiratory tract infections may result from infections by various pathogens, including bacteria, viruses, and fungi. Sometimes, after one infection is treated, another pathogen may cause a new infection, resulting in recurrent fever.

4. Complications: Conditions such as acute suppurative tonsillitis or acute suppurative bronchitis may also cause high fever. In such cases, aggressive anti-infective treatment is required.

5. Immune system problems: Some patients may have underlying immune system disorders, leading to inadequate immune responses against acute respiratory tract infections. This can make them more susceptible to recurrent fever, as the immune system fails to effectively recognize and eliminate pathogens.

If recurrent fever occurs with acute respiratory tract infection, it is recommended to promptly visit a professional and reputable hospital for evaluation. Treatment may include medications such as cefixime granules or amoxicillin granules, under the guidance of a physician.