Managing Symptoms of a Stomach Virus

This blog is for educational purposes only and does not replace professional medical advice or diagnosis. If you have health concerns, consult an AHPRA-registered telehealth doctor or request a medical certificate online if clinically appropriate. Please note: Hola Health does not currently offer Mental Health Care Plans.

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Disclaimer: The content of this blog is for informational purposes only and does not replace professional medical diagnosis, advice, or treatment.

Overview

Stomach viruses, often called “stomach flu” or gastroenteritis, are common infections resulting in symptoms like nausea & vomiting, diarrhoea, and abdominal discomfort. These infections are usually triggered by norovirus, rotavirus, or other viral agents, and they are easily transmitted through contaminated food, water, or close contact with infected people. While there is no specific cure for the stomach flu, and prescription medications such as antibiotics are not used for viral infections, the best strategy is to strengthen your support your recovery. This means resting at home, drinking enough fluids to prevent dehydration, and consuming small meals, to fuel your body for recovery. Though it may be uncomfortable, your body will eventually rid itself of the virus with the right care. Let’s explore techniques and remedies to handle and manage symptoms of stomach viruses, focusing on prevention and intervention.

What is stomach flu?

Stomach flu, also known as gastroenteritis, is a common illness that causes inflammation of the stomach and intestines. Viruses typically cause it and leads to symptoms like diarrhoea, stomach cramps, nausea & vomiting and sometimes fever. It usually resolves independently within a few days and isn’t serious. Despite being called “stomach flu”, it is not connected to the flu (influenza), which impacts the respiratory system. It’s very common in Australia, especially during the warmer months and early autumn.

Symptoms and causes

The symptoms of stomach flu can differ depending on the virus causing the infection, but the most common symptoms include:

• Nausea
• Vomiting
• Diarrhoea
• Abdominal pain
• Loss of appetite
• Fever
• Headache
• Weakness
• Muscle aches
• Dehydration (from diarrhoea and vomiting)

Causes

Viral infections primarily cause stomach flu. However, bacteria or parasites can also trigger it. The most common causes are:

• Norovirus: The most widespread cause of viral gastroenteritis, especially in adults. It spreads quickly through contaminated food, water, or surfaces.
• Rotavirus: Once a leading cause of stomach flu in children (as vaccination has minimised its prevalence in several countries), It often peaks between December and April.
• Adenovirus: This virus, particularly certain serotypes, usually causes respiratory infections, but it can also trigger gastrointestinal infections if unknowingly ingested. It may infect all age groups.
• Astrovirus: This virus mostly affects young children and individuals with weak immunity.

How do they spread?

• Through contaminated food and water – When the virus particles contaminate the food chain and water supply, it can easily spread to many people.
• Close contact with someone infected – The virus can spread through vomit or stool from an infected person.
• Touching contaminated objects or surfaces, then touching your face or food, increases the risk.

That’s why the virus spreads quickly in places like child-care centres, aged-care facilities, schools, or cruise ships.

Is a stomach bug the same as food poisoning?

The two look quite similar, but they differ. A stomach bug is caused by a virus and spreads easily from person to person. Food poisoning, on the other hand, is caused by bacteria or toxins in contaminated food. Here’s a quick comparison for better understanding:

Feature	Stomach bug	Food poisoning
Cause	Virus	Bacteria or toxins in contaminated food
Onset	12-48 hours	1-6 hours
Duration	2-5 days	1-2 days
Contagious	Yes	Usually no

Stages of stomach flu

The stages of stomach flu include:

1. Incubation period: The incubation period transpires after exposure to the virus and before the manifestation of symptoms. This duration may vary from one to three days, contingent upon the specific virus, such as norovirus or rotavirus. During this interval, the virus initiates multiplication within the host body; however, no identifiable symptoms are present.
2. Onset of symptoms: The onset of symptoms typically occurs abruptly and may encompass nausea, vomiting, diarrhoea, abdominal cramps, and a low-grade fever. Additional symptoms may include fatigue, muscle aches, and a general sense of malaise. This phase represents the acute stage of the illness.
3. Peak symptoms: The peak symptoms phase constitutes the period of greatest intensity, generally persisting from one to three days. During this stage, there is a significant risk of dehydration resulting from persistent vomiting and diarrhoea. Symptoms such as abdominal pain and loss of appetite may continue, complicating efforts to maintain adequate hydration and nutrition.
4. Recovery stage: The recovery stage includes the gradual improvement of symptoms and may take several days. During this time, staying hydrated and eating easily digestible foods, like rice, bananas, and toast, supports recovery. Temporary food intolerances, such as sensitivity to lactose, may occur but usually resolve within a week.

How long does a stomach bug last?

Typically:

• Symptoms appear within 12 to 48 hours after infection and last about 1–3 days.
• Some people may continue to feel tired for a few more days.
• Children, older adults, and individuals with weakened immune systems may take longer to recover or have more severe symptoms.

Home Remedies

Stomach flu, or viral gastroenteritis, is an infection that inflames the stomach and intestines, causing symptoms like nausea, diarrhoea, and vomiting. While it often resolves on its own, home management can ease discomfort and support recovery.

1. Hydration: It is essential to maintain hydration to replace fluids lost due to vomiting and diarrhoea. Small sips of water, clear broths, or oral rehydration solutions (ORS) are advisable. Caffeinated or sugary beverages should be avoided, as these can exacerbate dehydration. Use oral rehydration solutions such as oral rehydration solutions (commonly available at Australian pharmacies).
2. Electrolyte replacement: Electrolytes can be replenished through ORS, sports drinks, or homemade solutions that include salt and sugar. Additionally, coconut water serves as a natural alternative that help in restoring electrolytes.
3. Rest: Providing the body with adequate rest is important for recovery, particularly following stomach flu, which can induce fatigue. Refraining from engaging in strenuous activities during the recovery period is recommended.
4. Bland diet (BRAT): Following the BRAT diet, which consists of bananas, rice, applesauce, and toast, can facilitate digestion. As symptoms improve, one may gradually introduce bland foods such as boiled potatoes, plain crackers, or steamed vegetables.
5. Avoid trigger foods: Fatty, spicy, or dairy-based foods can irritate the stomach and exacerbate symptoms. Furthermore, abstaining from alcohol and caffeine is advisable.
6. Ginger: Ginger tea or chews may relieve nausea and help settle the stomach in some individuals, though evidence for its effectiveness in gastroenteritis is limited.
7. Peppermint: Peppermint tea can alleviate nausea and stomach cramps by promoting relaxation of the muscles within the gastrointestinal tract.
8. Probiotics: Following the acute phase of illness, consuming yogurt containing live cultures or a probiotic supplement may assist in restoring healthy gut bacteria and improve digestion.
9. Smaller, frequent meals: To avoid overloading the stomach, it is recommended to eat smaller portions more frequently rather than large meals.
10. Maintain hygiene: Wash hands frequently and disinfect surfaces to mitigate the risk of spreading illness to other members of the household.
11. Symptom relief: If you have fever or aches, over-the-counter medicines like over-the-counter pain relief may help. Follow dosage guidelines.

  Note: This information is for educational purposes only. You should consult a doctor or medical practitioner before attempting home remedies to ensure they are safe for your specific condition.

How can stomach flu be prevented?

Preventing stomach flu involves maintaining good hygiene and taking precautions to avoid virus exposure. Wash your hands thoroughly with soap and water, especially before eating, using the restroom, and caring for someone sick. Disinfect commonly touched surfaces like doorknobs and countertops, particularly during outbreaks. Avoid sharing food, drinks, or utensils with others. Consume only clean, well-cooked food and drink safe, filtered water. When travelling, be cautious with street food and unclean water sources. Vaccines, like the rotavirus vaccine for infants, is highly effective in preventing severe cases of the disease. You can reduce the risk of contracting stomach flu by prioritising cleanliness and safe practices. Additional prevention tips:

• If you're sick, avoid preparing food and minimise contact with others.
• For children: keep them home for at least 48 hours after symptoms stop.

When to consult a online doctor?

Telehealth consultation is recommended if symptoms associated with stomach flu either worsen or do not show improvement after several days. Immediate medical attention should be sought in instances of severe dehydration, which may manifest as intense thirst, dry mouth, diminished urination, dizziness, or fainting. Additional indicators that necessitate urgent care include a persistent high fever, the presence of blood in vomit or stool, severe abdominal pain, or the inability to retain fluids for a duration exceeding 24 hours. Certain groups, including infants, young children, older adults, pregnant women, and individuals with compromised immune systems, must seek medical advice promptly due to their increased susceptibility to complications. Should symptoms continue or if there is a suspicion of an underlying condition, such as food poisoning or a bacterial infection, it is essential to obtain medical guidance to facilitate appropriate management.  Telehealth is a convenient option for appropriate healthcare needs and can complement in-person healthcare. However, some conditions may require a physical examination, testing, or emergency care. Telehealth may not be suitable for serious or worsening symptoms.

How Hola Health may be able to help

Hola Health is an Australian telehealth platform that connects you with registered doctors and nurse practitioners - from the comfort of your home, at a time that suits you. Depending on your situation, a Hola Health clinician may be able to help with:

• 24/7 General medical advice via telehealth doctor consult - talk through symptoms or health concerns with a registered doctor or medical practitioner.
• Doctors certificate online - for work or personal leave, when clinically appropriate
• Referrals to specialists - or in-person services (if clinically appropriate)
• Online prescriptions - at a clinician's discretion and where clinically suitable.

Hola Health clinicians are AHPRA-registered Doctors and medical practitioners in Australia. They will always recommend an in-person consultation, specialist referral, or emergency care if that is in your best interest. Note: Telehealth is not suitable for all conditions. Hola Health does not replace your regular doctor or medical practitioner, specialist, or emergency services. If you are unsure whether telehealth is right for your situation, we recommend speaking with your usual healthcare provider. In emergencies, call 000.

Conclusion

Stomach infections are quite common, often short-term, and generally manageable with rest, hydration, and cleanliness. However, if symptoms worsen, consult a doctor without delay. Stay well-hydrated, practise good hygiene, and track your progress—these are important steps in your recovery.

FAQs

How can you tell if it’s a stomach bug or food poisoning?

Look at the cause (virus vs. contaminated food), the onset (food poisoning generally appears sooner), its contagiousness, and the duration.

Can you catch a stomach bug twice?

Yes, because immunity might not last forever, different viruses can trigger similar symptoms, and protection can weaken over time.

Is a stomach bug contagious? How long should I stay home?

Yes, it is very contagious. It’s better to stay home (or keep children home) for at least 48 hours after vomiting or diarrhoea has resolved. Some states have specific exclusion guidelines.

What should I eat when recovering from a stomach bug?

As your appetite comes back, begin with gentle, plain foods like bananas, rice, applesauce, and toast (the BRAT diet). Avoid heavy, greasy, spicy, or dairy-rich foods until you’ve fully recovered.