Giraffe fever (LTV) **Giraffe fever,** or Giraffe fever, or Moor fever (Marked Fever Response to Tropical Annelids (MFRTA) - a febrile reaction to tropical annelids) - an acute fever with hemorrhagic rashes when bitten by a female annelid. Caryophyllaeus fructificans from the order of nematodes in West Africa.