How long can flu virus last

Influenza, often called the flu, is an acute infection of the upper airway caused by an influenza A or B virus. Getting sick with influenza also puts you at risk of other infections. These include viral or bacterial pneumonia which affect the lungs. The risk of complications can be life-threatening. Seniors 65 years and older, very young children, people who have lung or heart diseases, certain chronic health conditions or weakened immune systems are at greater risk. Healthy pregnant women in the second half of their pregnancy are at greater risk of hospitalization following infection with influenza virus. In Canada, thousands of people are hospitalized and may die from influenza and its complications during years with widespread or epidemic influenza activity.

Acn can begin about 1 one to four days after average of 2 days, after to the influenza virus. Source: NHS With James M. Flu symptoms usually start within to 4 days, or an infection a person is first exposed.

Flu viruses and many cold viruses also have a viral envelope, meaning the capsid is covered by two layers of lipids similar to the cell membranes found on organisms. Can lead to pneumonia, respiratory failure, and more complications in persons with chronic diseases. If your fever is accompanied by a severe headache, severe throat swelling, an unusual skin rash, mental confusion, persistent vomiting, or any other out-of-the ordinary symptoms. When to Take Your Child to the E. Pregnancy complications If you get flu while you’re pregnant, there’s a risk that the infection could cause problems with your pregnancy. Send feedback. Mayo Clinic is a nonprofit organization and proceeds from Web advertising help support our mission. Usually, you can manage flu symptoms yourself at home and there’s no need to see a GP.