Health Guide: Diseases and parasites spread through ingestion

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Travelling abroad opens the door to exciting adventures and cultural experiences, but it also comes with its own set of risks. Among these are the potential health threats posed by diseases and parasites spread through ingestion.

Whether it’s savouring local delicacies, drinking water from unfamiliar sources, or simply practicing everyday hygiene, travellers can unknowingly expose themselves to various pathogens.

These invisible dangers can lead to illnesses that range from mild discomfort to severe, life-threatening conditions. Understanding how these diseases and parasites spread, and knowing how to protect yourself, is essential for any globetrotter aiming to have a safe and healthy journey.

Common ingested diseases and parasites

Common ingested diseases and parasites encountered while travelling abroad include bacterial infections like Salmonella and E. coli, viral infections such as Hepatitis A and Norovirus, and parasitic infections like Giardiasis, Amoebiasis, and tapeworms.

Bacterial Infections

• Salmonella: Found in contaminated food and water, often associated with undercooked poultry and eggs.
• E. coli: A common culprit in traveler’s diarrhea, contracted from contaminated water or food.
• Cholera: Caused by Vibrio cholerae, it leads to severe diarrhea and dehydration, usually contracted from contaminated water.

Viral Infections

• Hepatitis A: A liver infection spread through consuming contaminated food and water.
• Norovirus: Highly contagious, often spread in places with poor sanitation or overcrowded conditions.

Parasitic Infections

• Giardiasis: Caused by Giardia lamblia, this parasite is found in contaminated water and food.
• Amoebiasis: Entamoeba histolytica causes severe gastrointestinal symptoms and is spread through contaminated food and water.
• Tapeworms and Roundworms: These can be contracted by eating undercooked meat or fish.

How contamination occurs

Contamination often occurs due to poor sanitation and hygiene practices. Here are some common ways:

• Water sources: In many developing countries, tap water may not be safe to drink. Contaminated water can harbor bacteria, viruses, and parasites.
• Food handling: Food prepared with contaminated water or by individuals with poor hygiene can become a vector for disease.
• Street food: While often delicious and authentic, street food can sometimes pose a higher risk if proper food handling practices are not followed.
• Raw or undercooked food: Consuming raw or undercooked meat, seafood, and produce can introduce pathogens into the body.

Prevention strategies

Choose safe water

• Drink bottled water from reputable brands.
• Use water purification tablets or filters when necessary.
• Avoid ice cubes, as they may be made from contaminated water.

Eat safely

• Stick to hot, freshly cooked food.
• Avoid raw fruits and vegetables unless you can peel them yourself.
• Be cautious with dairy products, especially in areas where pasteurisation is not standard.

Maintain personal hygiene

• Wash hands thoroughly with soap and water before eating.
• Use hand sanitisers when soap and water are unavailable.
• Avoid touching your face, especially your mouth, with unwashed hands.

Be cautious with street food

• Observe the vendor’s hygiene practices.
• Choose busy stalls with a high turnover of food to ensure freshness.

Vaccinations and medications

• Get vaccinated against diseases like Hepatitis A and Typhoid fever before travelling.
• Consider prophylactic medications for areas where certain diseases, like malaria, are prevalent.

Conclusion

Travelling abroad does not have to mean falling ill. By understanding how diseases and parasites spread through ingestion and taking appropriate precautions, you can enjoy your travels while minimising health risks.

Always stay informed about the health advisories for your destination and consult with healthcare professionals before your trip.

This information is to complement and not replace the relationship with your family doctor. Always discuss your travel health requirements with your regular doctor or practice nurse.