Can giardiasis cause dehydration during pregnancy?

Yes. Frequent diarrhoea can cause loss of fluids and electrolytes. Pregnancy can increase the risk of dehydration from diarrhoeal illness, so persistent diarrhoea should be assessed by a healthcare professional.

Can you get giardiasis from drinking tap water?

It depends on the safety and treatment of the water supply. Giardia can spread through contaminated drinking water. If you are unsure whether your water is safe, use a reliable source of treated drinking water.

Is treatment for giardiasis safe during pregnancy?

Treatment needs to be decided by your doctor. Different medicines may be used for giardiasis, but your pregnancy, symptoms, medical history, and nutritional status should be considered before treatment is chosen.

Giardiasis During Pregnancy: Symptoms, Diagnosis & Treatment

Giardiasis during pregnancy is an intestinal infection caused by a tiny parasite called Giardia. You can become infected after swallowing the parasite through contaminated water, food, hands, surfaces, or objects. The infection can spread easily through faecal contamination. Poor hand hygiene, unsafe drinking water, and contaminated food can increase your exposure. Some people have no symptoms. Others develop diarrhoea, stomach discomfort, gas, nausea, or tiredness. The symptoms may last for several weeks. During pregnancy, prolonged diarrhoea can cause fluid loss. Therefore, you should speak to your doctor if your symptoms persist or become difficult to manage.

What Causes Giardiasis During Pregnancy?

You can develop giardiasis when you swallow Giardia germs. They are usually passed in the faeces of an infected person or animal. You may be exposed through:

Drinking contaminated or untreated water
Eating food contaminated with Giardia
Touching contaminated surfaces and then touching your mouth
Close contact with someone who has the infection
Poor hand hygiene after using the toilet or changing nappies
Swimming in contaminated recreational water and accidentally swallowing it

Common Sources of Exposure

Source	How exposure can happen
Drinking water	Water contaminated with faecal matter may contain Giardia
Food	Food can become contaminated during preparation or handling
Hands and surfaces	Germs can spread from contaminated hands, bathroom surfaces, toys, or objects
Recreational water	You may become infected after swallowing contaminated pool, lake, river, or other water

Safe drinking water, careful food handling, and regular handwashing can help reduce your risk.

Symptoms of Giardiasis During Pregnancy

You may have no symptoms. When symptoms occur, they can include:

Diarrhoea
Foul-smelling or greasy stools that may float
Gas and bloating
Stomach cramps or pain
Nausea
Tiredness
Reduced appetite
Weight loss
Dehydration

Symptoms commonly begin one to two weeks after infection and may last for two to six weeks. Some people can have symptoms for longer. If you have frequent diarrhoea, very little urine, dizziness, marked weakness, or difficulty keeping fluids down, contact your doctor promptly.

Can Giardiasis Affect Your Baby?

Giardiasis does not usually mean that the infection has directly affected your baby. However, prolonged diarrhoea can cause dehydration. Ongoing symptoms may also make it difficult for you to eat and absorb enough nutrients. Therefore, persistent symptoms during pregnancy may indirectly affect the health of your growing baby.

Diagnosis and Treatment of Giardiasis During Pregnancy

Your doctor may diagnose your condition based on the following factors:

Symptoms
Recent food and water exposure
Travel history
Household illness
Possible contact with someone who has diarrhoea

On the basis of this assessment, they may recommend a stool test to look for Giardia. You may need more than one stool sample because the parasite is not necessarily present in every bowel movement. Treatment depends on your symptoms, medical history, nutritional status, and pregnancy. Some people recover without medicine, while others may need treatment prescribed by a doctor.

What Should You Do If You Suspect Giardiasis?

You should take the following measures if you suspect such an infection:

Speak to your obstetrician or doctor
Tell them that you are pregnant
Follow any recommended stool testing
Drink enough safe fluids to reduce the risk of dehydration
Eat as tolerated if diarrhoea has affected your appetite
Wash your hands with soap and water regularly
Avoid preparing food for others while you are unwell
Avoid drinking water that you are unsure is safe

You should not take medicines for giardiasis on your own during pregnancy. Your doctor can decide whether treatment is needed and which option is suitable for you.

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FAQs on Giardiasis During Pregnancy: Symptoms, Causes, Diagnosis, and Treatment

Can giardiasis cause dehydration during pregnancy?
Yes. Frequent diarrhoea can cause loss of fluids and electrolytes. Pregnancy can increase the risk of dehydration from diarrhoeal illness, so persistent diarrhoea should be assessed by a healthcare professional.
Can you get giardiasis from drinking tap water?
It depends on the safety and treatment of the water supply. Giardia can spread through contaminated drinking water. If you are unsure whether your water is safe, use a reliable source of treated drinking water.
Is treatment for giardiasis safe during pregnancy?
Treatment needs to be decided by your doctor. Different medicines may be used for giardiasis, but your pregnancy, symptoms, medical history, and nutritional status should be considered before treatment is chosen.