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- Influenza (flu) - Symptoms and causes - Mayo Clinic
Learn more about the symptoms, causes and prevention of this potentially deadly viral infection that attacks the respiratory system
- Influenza (seasonal) - World Health Organization (WHO)
WHO fact sheet on influenza: includes key facts, definition, symptoms, transmission, seasonal epidemics, effects, prevention, WHO response
- Medical Diseases Conditions - Mayo Clinic
Explore comprehensive guides on hundreds of common and rare diseases and conditions from the experts at Mayo Clinic
- Influenza (seasonal) - World Health Organization (WHO)
Seasonal influenza is an acute respiratory infection caused by influenza viruses which circulate in all parts of the world It is characterized by a sudden onset of fever, cough (usually dry), headache, muscle and joint pain, severe malaise (feeling unwell), sore throat and a runny nose The cough can be severe and can last two or more weeks
- Pneumonia - Symptoms and causes - Mayo Clinic
Symptoms The signs and symptoms of pneumonia vary from mild to severe, depending on factors such as the type of germ causing the infection, and your age and overall health Mild signs and symptoms often are similar to those of a cold or flu, but they last longer Signs and symptoms of pneumonia may include: Chest pain when you breathe or cough
- World Health Organization (WHO)
The United Nations agency working to promote health, keep the world safe and serve the vulnerable
- Hantavirus pulmonary syndrome - Symptoms causes - Mayo Clinic
The symptoms of hantavirus pulmonary syndrome can worsen suddenly and may quickly become life-threatening If you have flu-like symptoms that progressively worsen over a few days, see your healthcare professional Get immediate medical care if you have trouble breathing
- Influenza: A (H5N1) - World Health Organization (WHO)
H5N1 is one of several influenza viruses that causes a highly infectious respiratory disease in birds called avian influenza (or "bird flu") Infections in mammals, including humans, have also been documented H5N1 influenza virus infection can cause a range of diseases in humans, from mild to severe and in some cases, it can even be fatal Symptoms reported have primarily been respiratory
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