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Vetdle Archive

Archive Case #187: Bovine Babesiosis

Cattle veterinary case - Easy - September 6, 2026

Clinical Clues

  1. An adult cow in a tick-prone area develops sudden weakness and stops eating.
  2. The owner notices that the urine has become dark red-brown.
  3. On examination the cow is febrile, anaemic, and mildly jaundiced.
  4. The herd has recently moved into country with heavy tick challenge.
  5. Blood smear findings support a haemoparasitic infection of red blood cells.
  6. This tick-borne disease of cattle is commonly known as redwater because of the haemoglobinuria it causes.

Diagnosis

Bovine Babesiosis

This case is most consistent with Bovine Babesiosis because the cow has fever, haemolytic anaemia, and red-brown urine in a tick-exposed environment. The most important clues are the haemoglobinuria and vector association, which make simple urinary bleeding less likely.

Learning review

Review the case evidence

Use the paired clues to explain how the evidence in this cattle case supports the provided diagnosis, Bovine Babesiosis, then compare your reasoning with the case explanation.

Evidence checkpoints

Clues 1-2

  1. Clue 1: An adult cow in a tick-prone area develops sudden weakness and stops eating.
  2. Clue 2: The owner notices that the urine has become dark red-brown.

Clues 3-4

  1. Clue 3: On examination the cow is febrile, anaemic, and mildly jaundiced.
  2. Clue 4: The herd has recently moved into country with heavy tick challenge.

Clues 5-6

  1. Clue 5: Blood smear findings support a haemoparasitic infection of red blood cells.
  2. Clue 6: This tick-borne disease of cattle is commonly known as redwater because of the haemoglobinuria it causes.

Self-review prompts

  1. After clues 1-2, what evidence from this cattle case shaped your initial interpretation?
  2. When you compare clues 3-4 with clues 1-2, what changed in your reasoning about Bovine Babesiosis?
  3. How do clues 5-6 align with the case explanation for Bovine Babesiosis?

Educational Use

Vetdle archive cases are educational veterinary games for diagnostic reasoning practice. They do not provide veterinary advice, diagnosis, treatment, or professional medical guidance.