How Long Do Flu Symptoms Last in a Human Body

how long do flu symptoms last

The human body can be a central part of many serious diseases, especially which can spread through the air. If we look into the list of such types of diseases, there is a long list of that, but one of the most common and serious ones is Flu. It cannot be cured easily if you don’t take precautions. Sometimes Flu can cause a critical situation for the infected patient too. But you can save yourself from a critical situation if you know about the symptoms. And also about how long do flu symptoms last. If you know this much, you can fight back against the flu virus. But if you don’t know about that, read the section below. This way, you will get knowledge about influenza.

What is Flu and Its Symptoms?

Flu is a respiratory-related disease that can spread through disease-causing viruses from the infected person into the healthy person with the help of air. In short, the virus can transmit from one person to another with the help of air. After spreading in a healthy person, it can attack the respiratory tract, such as the lungs, nose, and throat.

The situation of an infected person can vary from normal to critical. So, it can show different kinds of signs as well. But the most common signs are:

influenza virus
Image Credit: CIDRAP – University of Minnesota
  • Cough
  • Headache
  • Fever (it depends on the situation or stage of influenza)
  • Body ache
  • Sore throat
  • Runny nose

How Long Do Flu Symptoms Last in the Human Body?

Normal flu symptoms last for around one week, but critical flu symptoms last for around more than two weeks. It is because the critical symptom causes a serious problem for those people who are suffering from lung disease. However, normal influenza does not cause that many problems for those people who are not suffering from lung disease.

Flu (Influenza) has two types; one is normal Flu, and the second is critical Flu. 

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Normal Flu is a kind of sudden and quick onset of respiratory-related disorders such as cough and sore throat. Also includes other symptoms, which show signs because of normal Flu. For example, headache, rhinitis, chills, myalgia, and malaise. 

Sometimes, an infected person does not show signs of fever, especially old age people. But the abnormal symptoms can show signs in the physically weak or in those who are in long-term medical care. That kind of symptom comes with the critical Flu. Apart from that, an infected kid can show additional signs of vomiting, nausea, and diarrhea along with the influenza virus. So, we can say that critical Flu is a kind of acute onset of respiratory-related disorders which progresses gradually inside the body, Then moves to the other organs or systems like the digestive system to increase the effects. 

How Can an Infected Person Get Relief From Influenza?

An infected person can get relief from the influenza virus if they follow the below-mentioned things:

how long do flu symptoms last
Image Credit: Yale Medicine
  • Try to take some rest, if it is possible for you, because it can help to improve your immunity. Immunity is an important part of the immune system, which helps to maintain the body and mind.
  • If you can afford to drink plenty of liquid-based substances, especially water, then please do. It can help to decrease the effect of the symptoms.
  • Cough is the most common and critical symptom of the Flu, so try to cure it before it creates some serious problems. You can treat it through cough medicine.
  • If you find that you have a fever for more than three days, then you should consult with the doctor. And ask them to give you some advice or medicine to treat the Flu as soon as possible.

What is the Difference Between Flu and Coronavirus?

Corona Virus and Flu are a kind of diseases which require direct or indirect contact between two or more than two persons. They both are caused by respiratory problems. However, the viruses behind both diseases are different, and they are not related. 

  • If we look into COVID-19, which came in the form of coronavirus (SARS-Cov-2). In 2019, this virus was introduced in the form of a serious infection. On the other hand, Flu comes in the form of “Influenza Virus.” It is also a kind of infection but not similar to coronavirus.
  • Flu takes more time to spread in the air compared to coronavirus. According to the report, the spread rate of infection into the air (area-wise) is higher in the United States. Even when they took vaccines to protect themselves from death and illness.
  • If we compare both diseases, the Flu causes less problematic sickness. But it can be more problematic if the affected person is already struggling with some physical illness. Apart from that, compared to a corona patient, the Flu takes less time to reveal the symptoms. And it doesn’t take much time to recover the infected person. In short, Flu is not that much more problematic than COVID-19.
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Image Credit: Everyday Health
  • The symptoms and signs between these two diseases are almost the same, but it does not mean that you cannot distinguish between them. For that, you can check the diseases through dissimilar symptoms as an early step. If you don’t find anything dissimilar, then go for a physical checkup. Through this, you will get an idea of which one you are infected with. In short, you cannot recognize the major symptoms of COVID-19 without necessary testing.


In this blog, we have seen many important things, like how long do flu symptoms last in an infected person. And also took a glimpse of the various disease-relieving treatments. Apart from that, we learned the major and minor differences between coronavirus and influenza virus. This is because, most of the time, people get confused between these two viruses and use opposite medicines, which can cause serious problems. So, to save yourself from such kinds of situations, you have to keep all these things in mind.

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