All animal health pros need to be aware of this situation. The unidentified virus affects puppies and older dogs. When the animals are tested by veterinarians, the initial test for parvo is negative. Usually, the dogs die within three to five days. Dogs have been sent to The Michigan State University Veterinary Diagnostic Laboratory for necropsy, which did show parvo.
The best course of action is to vaccinate and to avoid areas where lots of dogs congregate.
Source: USA Today, August 22, 2022. Link.
Also see: New York Times, August 22, 2022. Link. Veterinarians are not sure how contagious the malady is. Most of the dogs affected so far have been under the age of two, an official said.