How do host factors influence influenza virus replication and pathogenesis?

What causes influenza (flu)?. The flu is caused by the influenza virus. Common classes of the virus are type A and type B. Each type includes several ... Four themes were identified as causes of vaccine hesitancy comprising: concerns over safety, lack of trust, lack of need for vaccination and cultural reasons. Feb 4, 2025 ... Pneumonia symptoms and causes · Bacterial pneumonia. · Viral pneumonia. Various viruses can cause this type, including the influenza virus, and it ... Influenza is a respiratory illness caused by a virus. Any kind of infection, including the flu, can cause sepsis, the body's life-threatening response to ... 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 ... Sepsis is the body's extreme reaction to any type of infection. The flu, which is a viral infection, can cause secondary complications such as sepsis. Jun 8, 2017 ... Antigenic drift in human flu viruses is what causes the changes in seasonal flu viruses each year and is why the seasonal flu vaccine must be ... The common cold leads to more health care provider visits and absences from school and work than any other illness each year. It is caused by a virus and is ... Viral gastroenteritis is not harmful. However, viral gastroenteritis can become dangerous if it leads to dehydration. What about a new, non-influenza virus, like the one that causes SARS? Would the world be able to cope with another flu pandemic? Yes, says Robert Webster ...