What are some examples of health conditions worsened by influenza?

What is the flu? · How does the flu spread? · Does your child need a flu vaccine every year? · Are some children more likely to have serious health problems caused ... The 1918 influenza pandemic was the most severe pandemic in recent history. It was caused by an H1N1 virus with genes of avian origin. Influenza C virus infections generally cause mild illness and are not thought to cause human epidemics. Influenza D viruses mainly affect cows. They are not ... Influenza seasonality: underlying causes and modeling theories. J Virol. 2007 Jun;81(11):5429-36. doi: 10.1128/JVI.01680-06. Epub 2006 Dec 20. A 2014 Vaccine poll reported that 43% of respondents would not get the vaccine because they believed it would cause influenza, but physicians are breaking down ... Feb 12, 2025 ... Generally, influenza viruses can infect some wild species without causing signs of disease, but new strains can emerge that cause illness with ... What Causes Influenza? The root cause of the illness is infection from one of the influenza A, B or C viruses. These viruses infect the nose, throat, and ... Jan 28, 2025 ... Symptoms of the flu such as a sore throat and a runny or stuffy nose are common. You may also get these symptoms with other illness such as a ... Feb 10, 2025 ... What causes body aches? ... Viral infections, such as the flu, COVID-19 or common cold, and some bacterial infections can cause widespread body ... Avian influenza (H5N1 HPAI), also known as "bird flu," is a highly infectious, systemic disease of poultry caused by an Orthomyxovirus of the genus ...