What are the prospects for a long-lasting or broadly protective influenza vaccine?

Mar 7, 2025 ... Influenza, commonly known as the flu, is a highly contagious respiratory illness caused by influenza viruses. Its severity can vary from mild to ... May 1, 2023 ... Infectious Agent. Influenza is caused by infection of the respiratory tract with influenza viruses, RNA viruses of the Orthomyxovirus genus. May develop after a child has a common cold caused by a virus. Conjunctivitis ... What causes Haemophilus influenzae? The H. influenzae bacteria live in ... Bacteria. Bacterial pneumonia can occur on its own or develop after you've had a virus like the cold, flu, COVID-19 or RSV. Jan 15, 2019 ... Colds and the flu are both caused by viruses, but not the same virus. They have similar symptoms and both affect the respiratory system. What causes it? • Influenza virus. • Can be caused by a virus, bacteria, or fungi. What are the symptoms? Sep 19, 2024 ... In infants, RSV can cause pneumonia or bronchiolitis, and people over the age of 50 or those with heart or lung disease are also at risk for ... Aug 13, 2024 ... Flu is a contagious respiratory illness caused by influenza viruses · Flu can cause mild to severe illness · Most experts believe that flu viruses ... Influenza is a communicable viral disease that affects the upper and lower respiratory tract. A wide spectrum of influenza viruses causes it. The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin.