If you receive a confirming diagnosis and your dog has recovered enough to return home, be sure to follow your veterinarian's instructions to protect you and your family. Most importantly, if your dog has been prescribed antibiotics be sure to finish all the medicine -- don't stop when symptoms disappear.
Anywhere from two days to four weeks after exposure to lepto, humans may experience sudden flu-like symptoms: chills, high fever, severe headache, muscle aches and vomiting. Jaundice (yellowish eyes and skin), red eyes, abdominal pain, diarrhea and/or a rash may develop.
After this first phase, the patient may recover before becoming ill again. In the second phase of the illness, the symptoms are more severe, and may include kidney damage, liver failure or meningitis (high fever with painful swelling of the membranes surrounding the brain). This phase also is known as Weil's Disease.
For most people, the illness lasts from a few days to three weeks or more. See your health care provider if you suspect you are ill. Without treatment, recovery may take several months. In extreme cases, or in individuals with weakened immune systems, lepto can be fatal.