Giardiasis can often be prevented by practising good hygiene and taking some common sense precautions. The advice below explains the most effective way to prevent giardiasis.
Wash your hands
The most effective way to prevent giardiasis is to wash your hands regularly, particularly:
- after going to toilet,
- after changing a nappy, and
- before handling and eating food.
Wash your hands with soap and water for 15-20 seconds, making sure that you clean both the front and back of your hands. Then rinse your hands and dry them with a clean towel. You should also encourage your children to wash their hands regularly.
Make sure your water is safe
In England, water purification systems mean that it is very unlikely that tap water could be contaminated by giardiasis. However, avoid drinking untreated water from rivers, or lakes.
If you are going camping, it is recommended that you boil water to at least 70C (158F) for 10 minutes before drinking it.
Travelling abroad
If you are travelling to countries where giardiasis is widespread and sanitation is poor, drink bottled water only. Make sure that the bottle is properly sealed.
Also, avoid eating raw fruit or vegetables because these may have been handled by somebody with giardiasis.
Preventing the spread of infection
If you are diagnosed with giardiasis, it is very important that you take some precautions in order to prevent other members of your household from becoming infected. You should:
- wash your hands regularly,
- not cook or handle food that is to be eaten by other members of your household, and
- avoid sharing utensils or towels.
It is recommended that you stay away from work or college until you have been completely free from symptoms for 48 hours.
Similarly, your child should stay away from school or nursery until they have been completely free from symptoms for 48 hours.
