Mumps is a highly contagious viral disease in people. Initial physical symptoms of the disease include lethargy, muscle pain, headache, and fever, and are usually followed by a painful swelling of the parotid salivary glands, located on the sides of the face.
While often associated with children, mumps can strike at any age. Though rare, dogs can become sick after exposure to the mumps virus from an infected person. Symptoms can include fever, lack of appetite, and a swelling of the salivary glands below the ears. After palpating your dog’s salivary glands, your vet will most likely order tests to rule out other, more common conditions that also cause the salivary glands to swell.
Ringworm, or dermatophytosis, is an infection of the skin that affects humans as well as animals. Despite its name, ringworm is not caused by any type of parasite or worm but by a fungus. The primary symptom of ringworm in people is an itchy, round rash.
In dogs, ringworm typically causes roughly round patches of hair loss that may or may not be itchy. Ringworm can be transmitted through direct contact with an infected individual (human or animal) as well as through contaminated objects (brushes, towels, etc.).
While Salmonella is often associated with food poisoning, it can also be passed to humans through contact with infected animals, and vice versa. In both humans and dogs, Salmonella can cause nausea, vomiting, diarrhea, fever, headaches, and abdominal cramps.
Young children and the elderly are more at risk for complications from Salmonella infection. Dogs are more resistant to Salmonella than are people, so the chances of you making your dog sick are slim. That said, taking common sense precautions only makes sense.
Giardia infection, or giardiasis, is one of the most common waterborne infections in the U.S. Giardia is a protozoa that appears in dogs, and can be seen in cats and even in exotic animals. It is spread through contact with feces and contaminated water. Symptoms include diarrhea and weight loss.
A person can get Giardia from a dog’s feces, and this disease can be passed from human to dogs, though a dog is far more likely to get it from another animal, especially in a pet store or puppy mill setting where many animals are kept in close quarters. According to the Centers for Disease Control (CDC), the most common mode of Giardia transmission is water, which can include drinking water, well water, lake and stream water, and swimming pool and spa water.