Common problems that travellers encounter, such as stomach upsets and those from insect bites, can be prevented by taking simple precautions.
These include such things as good hygiene and safe food preparation practices, drinking (and using) only treated or clean water, avoiding being bitten by various insects and worms, and getting vaccinated and taking pills to prevent diseases.
Clean water and water treatment
Everyone needs a minimum of about two and a half litres or just over half a gallon of clean water a day. In hot climates while doing things like carrying a backpack, hiking or just walking [...]
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