Please note: Alinia® is not approved to treat other possible symptoms of cryptosporidiosis and/or giardiasis (such as cramps, dehydration, nausea, fever, vomiting). It also is not approved to prevent the spread of infection.
What Is Giardiasis?
Giardiasis is an infection caused by Giardia lamblia (also known as Giardia). Giardia is a parasite found in water, food, soil, or on surfaces contaminated with feces from an infected person or animal. Giardia can survive outside the body for weeks or even months, and has been found in every region of the US and around the world.2
In the United States, giardiasis tends to peak in summer and decline in winter. When more individuals participate in outdoor recreational activities7 there is a higher incidence of infection—sometimes even twofold.
Once ingested, the parasite lives in the human intestines and commonly causes diarrhea. Gas, stomach cramps or pain, upset stomach, greasy stool, and nausea are also symptoms of Giardia infection. However, some individuals become infected but are asymptomatic – that is, they show no symptoms.2
Symptoms typically begin to show one to three weeks after infection and can last up to six weeks or longer.2
How Is Giardiasis Diagnosed?
A confirmed diagnosis is generally made by examining a prepared stool sample under a microscope in a laboratory. Individuals can expect to submit a series of samples over several days.2