Difference Between Flu and Stomach Bug

Stomach bug often comes with vomiting or diarrhea because of infections in the human body. Gastroenteritis is usually identified clinically, based totally on individual symptoms and symptoms. Determining the precise cause is usually no longer vital because it does not exchange the management of the scenario. The flu can spread to pneumonia, which may be caused by an endemic or next viral contamination.


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Flu vs Stomach Bug

The difference between the flu and stomach bug is the flu can stay in the body for a week or two, but the stomach bug lasts for about two days. Stomach upset can sometimes be very bad for solid foods and should be avoided in this case. Solid food is needed for flu.

Flu vs Stomach Bug

Flu viruses include four types. The fourth influenza generation forms four to seven generations in the family Orthomyxoviridae. Flu viruses are spread mainly by respiratory drops produced by coughing and sneezing. It can last for nearly one week. Flu is common in children and senior citizens. Children and senior citizens are prescribed to be taken care of.

Infectious diarrhea and swelling in the stomach are known as stomach bugs. Vomiting can be an alarming sign of gastroenteritis. Fever and dehydration may occur in patients. It usually takes nearly two weeks to be normal. It has no connection to the flu. Bacteria buildup in the body can cause gastroenteritis.

Comparison Table

Parameters of ComparisonFluStomach Bug
Time periodNearly two weeksNearly two days
Advicedrink waterrest
Lots of waterYesNo
VaccinesAvailableNot available
Solid foodYesNo

What is Flu?

Flu could be a disease that’s caused by viruses. Mild to severe fever and runny nose are common symptoms. Cough and fatigue are also some symptoms. These symptoms usually start in two days and are but four days. The flu can last for about a period.

Diarrhea and vomiting are possible, especially in children. The flu can regenerate into pneumonia because of a rise within the virus. Flu also can result in many serious complications like acute respiratory distress syndrome and meningitis. Asthma and heart syndrome may happen to the person.

Washing hands regularly and shutting the mouth and nose when individual coughs and sneezes reduces infection. Annual immunizations can help protect you from the flu. Influenza viruses, especially IAVs, change rapidly, so flu vaccines are regularly updated to stay up with the spread of the flu.

The vaccines can protect against two strains which are IAV and IBV. Antibody or antigen trials and polymerase chain reaction (PCR) help detect the virus in humans. These tests can detect nucleic acids. Many therapies are often sued, and antibiotics are employed in extreme infections. Flu is common where people are at high risk. Flu is restricted in most healthy people.

What is Stomach Bug?

Gastroenteritis usually involves both diarrhea and vomiting. A stomach ache can be an initial sign of a stomach bug. Symptoms can be seen in the person within three days. The condition can weaken down if it is not so serious.

Fever, fatigue, headaches, and muscle aches are all bacterial infections. If the stool has blood in it, the infection is increasing. Bacterial contagions cause severe pain in the abdomen. This may last for several weeks. Children suffering from bugs can last up to eight days mostly.

Chronic diarrhea is very prevalent in poor countries. Dehydration is the commencement of diarrhea. Rigorous dehydration in children is very prevalent nowadays. Poor skin turgor can only transpire when the person has rigorous dehydration. The symptom of dehydration is eccentric breathing.

Recurrent infections are common where malnutrition is a problem. Stable growth and long-term mental retardation may occur in humans after the infection. Guillain-Barré syndrome is visible in very few people. Shiga infection that produces Escherichia coli toxin is also a result of the infection.

Main Differences Between Flu and Stomach Bug

  1. Flu can stay for a week or two, but Stomach bugs can stay mostly for two days.
  2. Flu can go away if the person drinks lots of water, and bugs can go away if the person takes a rest.
  3. Flu can go away if a person gets plenty of sleep, but it does not work in the bug.
  4. Electrolytes do not work in Flu but work in Bug.
  5. Vaccines are available for flu but not available for bugs.
  6. Solid food is needed in flu but avoids solid food in the bug.
Difference Between Flu and Stomach Bug


  1. https://www.sciencedirect.com/science/article/pii/S0022399901002124
  2. https://www.cell.com/fulltext/S0092-8674(16)31252-1
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