Comprehensive Zoonosis and Parasitic Disease Overview for Veterinary and Human Health

What is zoonosis?

Any disease or parasite that is transmissible from animals to humans.

Who is responsible for informing clients about zoonotic diseases?

Veterinary staff.

What should be done in suspected cases of zoonotic parasites?

Refer the client to a physician, family practitioner, obstetrician, or public health worker.

What individuals are most at risk for acquiring zoonotic parasites?

Occupational risks, pet caregivers, mentally disabled, immunocompromised individuals, pregnant women, infants, young children, and the elderly.

What are some simple control measures for preventing zoonosis?

Regular deworming, annual fecal exams, daily disposal of feces, and washing hands.

What is the definitive host for Toxoplasma gondii?

Felines.

Who are at-risk individuals for Toxoplasmosis?

Pregnant women and their developing fetuses, AIDS patients.

What are the three forms of Toxoplasma gondii?

Tachyzoites, tissue cysts, and oocysts.

What are the symptoms of congenital toxoplasmosis?

Cerebral calcification, chorioretinitis, hydrocephaly, microcephaly, and psychomotor irregularities.

How is acquired toxoplasmosis transmitted?

Ingestion of sporulated oocysts or infected meat containing bradyzoites.

What are common symptoms of acquired toxoplasmosis?

Mild fever, lymphadenopathy, malaise, and myocarditis.

What is the primary method for diagnosing Toxoplasmosis?

Serologic testing for the presence of antibodies against the organism.

What is the treatment for ocular toxoplasmosis?

Pyrimethamine in conjunction with triple sulfa drugs.

What are the symptoms of Cryptosporidiosis?

Prolific, painful, watery diarrhea.

Who are at-risk individuals for Cryptosporidiosis?

Farm and dairy workers, AIDS patients, and all ages are susceptible.

How is Cryptosporidium parvum transmitted?

Ingestion of oocysts from feces of very young calves or contaminated drinking water.

What is the treatment for Cryptosporidiosis?

Symptomatic treatment, primarily fluids for dehydration.

What is the definitive host for Taenia saginata?

Humans.

What is the transmission route for Taenia saginata?

Ingestion of raw or undercooked beef infected with Cysticercus bovis.

What are the symptoms of Taenia saginata infection?

Non-specific abdominal signs like diarrhea, cramping, and constipation.

What is the treatment for Taenia saginata infection?

Praziquantel or Niclosamide.

What is the definitive host for Taenia solium?

Humans.

What are the symptoms of neurocysticercosis caused by Taenia solium?

Pain, paralysis, epileptic seizures, and ocular lesions.

What is the treatment for Taenia solium infection?

Praziquantel and surgical removal of offending lesions in the CNS.

What is the route of transmission for Echinococcus granulosus?

Ingestion of eggs from definitive hosts like dogs and cats.

What type of cyst does Echinococcus granulosus form in humans?

Unilocular hydatid cyst.

What are the symptoms of Hydatid disease?

Symptoms vary by site of infection.

What is the treatment for Hydatid disease?

Surgical intervention and medications like Mebendazole or Albendazole.

What is the definitive host for Dipylidium caninum?

Dogs and cats.

What are the clinical signs of human dipylidiasis?

Usually asymptomatic, but can include diarrhea, abdominal pain, and anal pruritis.

What is the treatment for human dipylidiasis?

Praziquantel and Niclosamide; treat all household pets with anthelmintics and flea control.

What is the definitive host for Spirometra mansonoides?

Dogs, cats, and humans.

What are the symptoms of malignant plerocercoidosis (Sparganosis)?

Nodular, itchy skin lesions, conjunctival and eyelid lesions, urticaria, painful edema, and possible CNS involvement.

How is Diphyllobothrium latum transmitted?

Ingestion of raw or insufficiently cooked freshwater fish.

What are the symptoms of Diphyllobothriasis?

Usually asymptomatic; may include abdominal discomfort, diarrhea, weight loss, and Vitamin B12 deficiency.

What is the prepatent period for Diphyllobothriasis?

5 to 6 weeks.

What is the treatment for Enteric Hookworm Disease?

Mebendazole for three days, then repeat in 2 to 6 weeks; surgical removal may be necessary.

What are the symptoms of visceral larva migrans?

Fever, leukocytosis, persistent eosinophilia, and hepatomegaly.

What is the definitive host for Toxocara canis and Toxocara cati?

Dogs and cats.

What is the transmission method for Baylisascaris procyonis?

Accidental ingestion of infective second-stage larvae from raccoon feces.

What are the symptoms of neural larva migrans?

Asymptomatic in few cases; may include lethargy, loss of muscle coordination, and CNS disease.

What is the treatment for ocular larva migrans?

Can be treated with a laser if larvae are localized and visualized in the eye.

What are the symptoms of cutaneous larva migrans?

Red, tunnel-like migration tracks with severe pruritis, blisters, and red bumps.

What is the common name for Trichinella spiralis?

Trichina worm.

What is the prevention method for trichinosis?

Cook meat thoroughly to at least 160°F and freeze meat properly.

What are the symptoms of early abdominal syndrome in trichinosis?

Enteritis, malaise, fever, nausea, vomiting, abdominal pain, and diarrhea.

What is the definitive host for Sarcoptes scabei var. canis?

Canines.

What are the symptoms of canine scabies?

Lesions on trunk and limbs, severe pruritis, and possible skin blisters.

What is the treatment for canine scabies?

Oral ivermectin and permethrin creams.

What is the role of intermediate hosts in the life cycle of Spirometra mansonoides?

Fish, frogs, and snakes serve as intermediate hosts.

What is the prepatent period for benign plerocercoidosis?

20 days to 14 months.

What is the common transmission route for visceral and ocular larva migrans?

Ingestion of eggs from contaminated soil or hands.

What are the symptoms of later general trichinosis syndrome?

Allergic vasculitis, myalgia, muscle weakness, and possible serious complications.

What is the primary prevention method for Enteric Hookworm Disease?

Prevent dogs and cats from defecating in public places and dispose of fecal material properly.

What are the symptoms of malignant plerocercoidosis?

Nodular lesions, conjunctival lesions, and possible CNS involvement.

What is the treatment for benign plerocercoidosis?

Surgical removal of sparganum larvae.

What is the transmission method for Ancylostoma caninum?

Larval penetration of unprotected skin from contaminated soil.

What is the definitive host for Diphyllobothrium latum?

Dogs, cats, and humans.