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Preventing Gastroenteritis: Tips for Staying Healthy

By Dr. Alisha Chaubal in Nanavati Max Institute of Gastroenterology & Flexible Endoscopic Surgery

May 28 , 2025 | 5 min read

Gastroenteritis is an infection that causes inflammation in the stomach and intestines, resulting in diarrhoea, vomiting, stomach cramps, and fever. Caused by viruses, bacteria, or parasites, this illness quickly spreads via contaminated food, water, and even from person to person.

Most of the time, the illness resolves within a few days, but gastroenteritis can reach severe intensity, especially for infants, older adults, and anyone with an impaired immune system. Dehydration is pretty likely, and if not properly attended to, the situation can develop further. The good thing is that strict hygiene practices, food safety measures, and vaccinations have made the prevention of gastroenteritis possible. This blog discusses the best preventive measures and what can be done when one catches the infection.

How is Gastroenteritis Spread?

Gastroenteritis is mainly spread through the faecal-oral route, where germs from an infected person’s stool contaminate food, water, or surfaces and are then ingested by another person. Poor hygiene, consuming contaminated food, or drinking unsafe water are common ways the infection spreads.

Eating undercooked or spoiled food is another major culprit. Meats, seafood, dairy, and raw vegetables can harbour bacteria like Salmonella and E. coli, leading to severe infections. Unfiltered or unboiled water is equally risky, particularly in places with inadequate sanitation.

Crowded environments such as schools, daycare centres, restaurants, and hospitals are hotspots for outbreaks because they increase the chances of person-to-person transmission. If one person gets sick, the infection can spread quickly to others through shared surfaces, utensils, or direct contact.

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Tips for Preventing Gastroenteritis

Practice Good Hygiene

Washing your hands properly with soap and water, especially after using the restroom and before eating, can reduce the risk of infection significantly. Children need to be taught the importance of washing their hands frequently, as they tend to touch their faces often.

Alcohol-based hand sanitisers can be useful when soap and water aren’t available, but they don’t eliminate all germs, especially some viruses. Regularly cleaning high-contact surfaces like kitchen counters, doorknobs, and bathroom taps further reduces the spread of infection.

Safe Food Handling

Always wash fruits and vegetables thoroughly under running water to remove dirt, bacteria, and pesticides. Cooking meats, poultry, and seafood at the right temperature kills harmful microorganisms - chicken, for example, should be cooked at 75°C (167°F) to make sure it’s safe.

Raw eggs and shellfish should be avoided as they are more likely to carry bacteria. Storing food properly is just as important; perishable items should be refrigerated, and expired products should be discarded. Leftovers must be reheated thoroughly before eating.

Stay Hydrated

Drinking clean, safe water is essential to good digestive health. In areas where tap water isn’t safe, it’s best to stick to boiled or filtered water to prevent infections. If you’re travelling to a place where sanitation is questionable, bottled water is the safest option.

Hydration is especially important if gastroenteritis does occur. Vomiting and diarrhoea can lead to dehydration, which worsens symptoms. Oral rehydration solutions (ORS) help restore lost fluids and electrolytes. Having coconut water, buttermilk, or lemon water with a pinch of salt can also help maintain hydration levels naturally.

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Avoid Contact with Infected Individuals

Since gastroenteritis spreads so easily, it’s best to avoid close contact with people who are sick. If someone in your home is unwell, keep personal items like towels, toothbrushes, and utensils separate to prevent the spread of infection.

If a child has symptoms of gastroenteritis, keeping them home from school or daycare is essential to prevent an outbreak. Workplaces should also encourage employees to stay home if they are experiencing symptoms rather than risk spreading the infection to colleagues.

Regularly disinfecting frequently touched surfaces in homes and workplaces can also minimise the risk of spreading gastroenteritis-causing bacteria and viruses.

Vaccination Against Gastroenteritis

Vaccines play a very important role in protecting against certain types of gastroenteritis, especially in young children. The rotavirus vaccine, which is part of routine immunisation schedules, helps prevent severe diarrhoea in infants caused by rotavirus, one of the most common causes of gastroenteritis in children.

Vaccination protects individuals and helps in building herd immunity, reducing the chances of infection spreading within the community. While there isn’t a single vaccine that prevents all forms of gastroenteritis, staying up to date with recommended vaccines is a good preventive measure.

When to Seek Medical Attention?

In most cases, gastroenteritis improves within a few days with rest and hydration. However, certain warning signs indicate the need for medical attention. Severe dehydration, characterised by dry mouth, dizziness, sunken eyes, and reduced urine output, requires urgent medical attention. Infants and older adults are particularly vulnerable and should be monitored closely.

Other symptoms like high fever, blood in stool, persistent vomiting, and severe weakness may point to a more serious infection requiring immediate medical treatment. If symptoms last longer than a week, see a doctor immediately. 

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Conclusion

Preventing gastroenteritis is simple with the right precautions. Practising good hygiene, ensuring food safety, drinking clean water, and getting vaccinated when necessary all contribute to lowering the risk of infection. Small lifestyle adjustments, like regular handwashing and avoiding undercooked food, can go a long way in keeping the digestive system healthy.

While most cases resolve on their own, severe symptoms should never be ignored. If you or a loved one experiences persistent vomiting, dehydration, or prolonged stomach issues, don’t hesitate to seek medical attention. At Nanavati Max Super Specialty Hospital, we are committed to providing quality care for all gastrointestinal issues. Book an appointment with our specialists today to receive expert guidance and treatment.

Disclaimer: The information in this article is for educational purposes only and does not substitute professional medical advice. Always consult a gastroenterologist for persistent symptoms.

Frequently Asked Questions

1. How long does gastroenteritis last?

Most cases last two to five days, though some may extend up to a week. Recovery depends on the cause and severity of symptoms.

2. What is the most common cause of gastroenteritis?

Viruses like norovirus and rotavirus are the leading causes, though bacteria such as Salmonella and E. coli can also trigger gastroenteritis.

3. How to recover from gastroenteritis?

Staying hydrated, getting plenty of rest, and eating easy-to-digest foods like khichdi, yogurt, and bananas can help speed up recovery.

4. What is the best treatment for gastroenteritis?

Mild cases improve with hydration and rest. Severe cases may require medical intervention, including IV fluids and antibiotics for bacterial infections.

5. How do doctors treat gastroenteritis?

Treatment focuses on hydration therapy, anti-nausea medications, and probiotics. In severe cases, hospitalisation may be necessary.

6. Can I get gastroenteritis more than once?

Yes, different viruses and bacteria can cause gastroenteritis, so reinfection is possible.

7. What should I do if I have gastroenteritis?

Rest, avoid solid foods initially, and stay hydrated with ORS or coconut water.

8. Can gastroenteritis be prevented in children?

Yes, frequent handwashing, vaccination, and making sure they consume clean food and water can reduce their risk of infection.

References

1. Centers for Disease Control and Prevention. (2023). Viral Gastroenteritis.
https://www.cdc.gov/gastroenteritis/index.html