What are the challenges in developing a universal influenza vaccine?

What Causes Influenza? Influenza is caused by several different viruses that are in the influenza family. Each year, flu season is defined by a few ... Oct 18, 2018 ... What is keto flu? The so-called keto flu is a group of symptoms that may appear two to seven days after starting a ketogenic diet. · What causes ... Jan 14, 2025 ... Bird flu, also known as avian influenza A (H5N1) or highly pathogenic avian influenza (HPAI), is caused by a virus that can cause serious illness and death in ... The inflammation is caused by your immune system's response to a viral infection. “Some of the most common viruses associated with stomach flu are rotavirus and ... The Flu. Similarly, the influenza virus leads to head congestion by infecting your nose, throat and lungs, and causing nasal swelling. People often confuse a ... Bacteria. Bacterial pneumonia can occur on its own or develop after you've had a virus like the cold, flu, COVID-19 or RSV. Feb 12, 2018 ... We all know the symptoms of influenza infection include fever, cough, sore throat, muscle aches, headaches and fatigue. But just what causes all the havoc? Influenza D virus can infect humans but is not known to cause illness. In humans, influenza viruses are primarily transmitted through respiratory droplets from ... Influenza (or “flu”) is a respiratory infection caused by influenza virus. Influenza outbreaks happen every year, usually between November and April. Avian influenza (H5N1 HPAI), also known as "bird flu," is a highly infectious, systemic disease of poultry caused by an Orthomyxovirus of the genus ...