Trailering your horse to a show or clinic? How to prevent and recognize this dangerous infection. Shipping fever is the common name for pneumonia associated with transport or travel, caused by either a viral or bacterial respiratory tract infection. Pneumonia usually starts with an influenza or herpes virus infection, which in and of itself doesn’t cause a lot of clinical disease – the visible signs of a virus may just be fever, a runny nose and a slightly depressed animal.
