Fever is not always present in influenza patients, especially in elderly persons. The fever and body aches can last 3-5 days and the cough and lack of energy may last for 2 or more weeks, especially in the elderly.
Symptoms of a flu typically last for around five to seven days. For some older adults, particularly those with high risk factors, the flu may last one to two weeks. Some have reported experiencing cough and fatigue for up to three weeks.
What is influenza A? Influenza A is a type of virus that causes influenza (the flu), a highly contagious respiratory illness. If you get it, you will need to rest at home and avoid infecting others. Vaccination can protect you against influenza A. The other types of influenza virus are type B and type C.
The most severe symptoms generally last 2 to 3 days – the start of the flu is when the infection is at its worst, so the symptoms are at their most severe. During this time you will most likely be confined to bed with fatigue, weakness, and a high fever.
Symptoms usually appear from one to four days after exposure to the virus, and they last five to seven days. For people who’ve had a flu shot, the symptoms may last a shorter amount of time, or be less severe. For other people, the symptoms may last longer. Even when symptoms resolve, you may continue to feel fatigued.
Call your doctor or go to the emergency room. Your fever doesn’t get better. If it won’t go away it might mean you’ve got another infection in your body that needs treatment. Generally, a fever for an adult is a temperature over 100.4 degrees F.
The flu and COVID-19 have many similar symptoms. They include fever or feeling feverish/chills, cough, shortness of breath or difficulty breathing, fatigue (tiredness), sore throat, runny or stuffy nose, muscle pain or body aches, and headaches.
Symptoms can begin about 1 to 4 days, or an average of 2 days, after a person is first exposed to the influenza virus. Fever and other symptoms can usually last up to 7 to 10 days, but the cough and weakness may last 1 to 2 weeks longer.
In some people, especially those at high risk, the flu may lead to complications that are more serious. Inflammation in the small lung airways with infection, known as pneumonia, is a serious flu-related complication. Pneumonia can be life threatening in high-risk individuals or if left untreated.
The great majority of people with coronavirus will have mild or moderate disease and will make a full recovery within 2-4 weeks. But even if you are young and healthy – meaning your risk of severe disease is low – it is not non-existent.
According to the Centers for Disease Control and Prevention (CDC), an uncomplicated influenza infection will last from three to seven days in most people, including children. However, a cough and feelings of weakness or fatigue can last for two weeks or longer.
How long does it take to recover? The COVID-19 recovery period depends on the severity of the illness. If you have a mild case, you can expect to recover within about two weeks. But for more severe cases, it could take six weeks or more to feel better, and hospitalization might be required.