Centers for Disease Control and Prevention (CDC) Infectious Diseases Manual

• Anaplasmosis — An infectious, non-contagious disease caused by gram-negative bacteria of the genus Anaplasma, primarily transmitted through tick bites (especially Ixodes). The condition affects both animals (notably ruminants and dogs) and humans (human granulocytic anaplasmosis). Clinically, it manifests structurally at the blood cell level (where the bacteria parasitize leukocytes or erythrocytes), causing high fever, chills, severe anemia, muscle aches, headache, and leukopenia.
• Ascaris — A genus of large parasitic cylindrical nematode worms in the Ascarididae family, which inhabit the small intestine of humans and other mammals during their adult stage. The typical and most well-known species is Ascaris lumbricoides, the etiological agent of ascariasis, a parasitic organism structurally adapted to the enteric environment, capable of causing severe digestive, respiratory, and nutritional disorders in the absence of proper treatment.