I don't think this dog is vomiting. Just diarrhea. Neat info on the gelatin!
Giardiasis is an infection of the small intestine caused by a microscopic organism (protozoa), Giardia lamblia.
Symptoms
Abdominal pain
Diarrhea
Gas or bloating
Headache
Loss of appetite
Low-grade fever
Nausea
Swollen or distended abdomen
Vomiting
The time between being infected and developing symptoms is 7 - 14 days. The acute phase lasts 2 - 4 weeks.
Treatment
Some infections go away on their own. Anti-infective medicines may be used.
Cure rates are generally greater than 80%. Drug resistance may be a factor in treatment failures, sometimes requiring a change in antibiotic therapy.
In pregnant women, treatment should wait until after delivery, because some of the drugs used to treat the infection can be harmful to the unborn baby.
Causes
Giardiasis outbreaks can occur in communities in both developed and developing countries where water supplies become contaminated with raw sewage.
It can be contracted by drinking water from lakes or streams where water-dwelling animals such as beavers and muskrats, or domestic animals such as sheep, have caused contamination. It is also spread by direct person-to-person contact, which has caused outbreaks in institutions such as day care centers.
Travelers are at risk for giardiasis throughout the world. Campers and hikers are at risk if they drink untreated water from streams and lakes. Other risk factors include:
Exposure to a family member with giardiasis
Institutional (day care or nursing home) exposure
Unprotected picky sex
