What are the symptoms of H7N9 avian influenza?

Nov 21, 2024 Source: Cainiu Health

Dr. Yang Ziqi

Introduction

Under normal circumstances, symptoms of H7N9 avian influenza include fever, cough, difficulty breathing, muscle pain, and gastrointestinal symptoms. In daily life, it is recommended to avoid contact with live poultry and wild birds, pay attention to personal hygiene, and wash hands frequently to help prevent H7N9 avian influenza. If symptoms of H7N9 avian influenza occur, it is advisable to seek medical examination at a hospital promptly to determine the cause and receive targeted treatment.

Generally, symptoms of H7N9 avian influenza include fever, cough, difficulty breathing, muscle pain, and gastrointestinal symptoms.

1. Fever: After infection with the H7N9 avian influenza virus, patients usually develop fever with temperatures reaching above 39°C, which may last for several days.

2. Cough: The virus attacks the respiratory tract, primarily the lower respiratory tract including the trachea, bronchi, and lung tissue. Viral infection damages the respiratory mucosa, stimulating receptors on the mucosal surface and triggering a cough reflex.

3. Difficulty breathing: When the H7N9 avian influenza virus multiplies extensively in the lungs, it causes pulmonary inflammation. This inflammation damages the alveoli and capillaries in the lungs, impairing the gas exchange function of the alveoli.

4. Muscle pain: Following viral infection, the body mounts an immune response, releasing inflammatory mediators such as histamine and prostaglandins. These substances increase the sensitivity of pain receptors in muscle tissue and cause localized inflammatory reactions in the muscles.

5. Gastrointestinal symptoms: Some patients infected with the H7N9 avian influenza virus may experience gastrointestinal symptoms such as vomiting, diarrhea, and stomach pain due to damage to the gastrointestinal mucosa caused by the virus.

In daily life, it is recommended to avoid contact with live poultry and wild birds, maintain personal hygiene, and wash hands frequently to help prevent H7N9 avian influenza. If symptoms of H7N9 avian influenza occur, it is advisable to seek timely medical examination to determine the cause and receive targeted treatment.

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