Pet Infections: Pathogens and Symptoms Part 3

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Pet Infections, Pathogens and Symptoms
Pet Infections, pathogens and symptoms



Animals involved

Mode of transmission


Saint Louis encephalitis

Saint Louis encephalitis virus


mosquito bite

The majority of infections result in mild illness, including fever and headache. When infection is more severe the person may experience headache, high fever, neck stiffness, stupor, disorientation, coma, tremors, occasional convulsions and spastic paralysis.

Swine influenza

any strain of the influenza virus endemic in pigs (excludes H1N1 swine flu, which is a human virus)


close contact

Symptoms of zoonotic swine flu in humans are similar to those of influenza and of influenza-like illness in general, namely chills, fever, sore throat, muscle pains, severe headache, coughing, weakness, shortness of breath, and general discomfort.

Taenia crassiceps infection

Taenia crassiceps

wolves, coyotes, jackals, foxes

contact with soil contaminated with feces

Headaches, Nausea, and Vomitting


Toxocara canis, Toxocara cati

dogs, foxes, cats

ingestion of eggs in soil, fresh or unwashed vegetables and/or undercooked meat

Least serious of the three syndromes and is believed to be due to chronic exposure. Signs and symptoms of covert toxocariasis are coughing, fever, abdominal pain, headaches, and changes in behavior and ability to sleep, Upon medical examination, wheezing, hepatomegaly, and lymphadenitis are often noted.


Toxoplasma gondii

cats, livestock, poultry

exposure to cat feces, organ transplantation, blood transfusion, contaminated soil, water, grass, unwashed vegetables, unpasteurized dairy products and undercooked meat

fever swollen lymph nodes, specially in the neck, headache muscle aches and pains sore throat


Trichinella spp.

rodents, pigs, horses, bears, walruses, foxes, crocodiles, birds

eating undercooked meat

symptoms usually start two to eight weeks after infection, Diarrhea, Abdominal pain, Fatigue, Nausea and vomiting


Mycobacterium bovis

infected cattle, deer, llamas, pigs, domestic cats, wild carnivores (foxes, coyotes) and omnivores (possums, mustelids and rodents)

milk, exhaled air, sputum, urine, faeces and pus from infected animals

Coughing that lasts three or more weeks, Coughing up blood, Chest pain, or pain with breathing or coughing, Unintentional weight loss, Fatigue, Fever, Night sweats, Chills, Loss of appetite


Francisella tularensis

lagomorphs (type A) and rodents (type B)

ticks, deer flies, and other insects including mosquitoes

skin ulcer that forms at the site of infection usually an insect or animal bite, Swollen and painful lymph glands, Fever

Chills, Headache, Exhaustion

West Nile fever


birds, horses

mosquito bite

symptoms and signs of West Nile virus include fever, headache, body aches, skin rash, and swollen lymph nodes. Severe symptoms and signs may include stiff neck, sleepiness, disorientation, coma, tremors, convulsions, and paralysis. Most cases of West Nile virus infection are mild and go unreported.

Zika fever

Zika virus

chimpanzees, monkeys, apes, baboons

mosquito bite, sexual intercourse, blood transfusion and sometimes bites of monkeys

fever, rash, joint pain, conjunctivitis, or red eyes, muscle pain, headache pain behind the eyes vomiting

Cat Scratch,




Infection cannot be transmitted between people, leads to swelling around scratch site, fatigue.

Risk to pregnant woman, pass the infection on to unborn baby.

But severe congenital toxoplasmosis is rare.

Bump or blister at the bite or scratch site, swollen lymph nodes near the bite or scratch site, fatigue, headaches, low-grade fever.

fever swollen lymph nodes, specially in the neck, headache muscle aches and pains sore throat


Hantavirus spp.


other infection transmitted to humans from rats include Leptospirosis, rat bite fever and a type of Meningitis

Hantavirus can cause a range of diseases in humans from mild, flu-like illness to severe respiratory distress and kidney disease




That can be passed to people who own/work with exotic birds.

High fever, Diarrohea, eye infection and bright red spots




Reptiles can put young children at risk to rare form of Salmonella infection

Snakes, carry the infection on their skin and shed it in their faeces

Mild cause a mild illness with fever, vomiting, abdominal pain and diarrhoea.

Lyme disease,




Common symptom is a red rash around tick bite, flu like.

It cause high fever and aggressive behaviour but it can also spread to the brain and nervous system, and can be fatal.

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