Harm by Parasites/Protozoans

1. Absorbing food intended for the host 2. Sucking blood or lymph a. ticks 3. Feeding on the tissue of the host 4. Causing mechanical obstruction or pressure 5. Causing growth of nodules or tumors and preparing tissues or vessels 6. Causing wounds thru which infestation can occur 7. Destruction of tissue 8. Irritation 9. Transmitting some infections d2's such as malaria, viruses, blood protozoa,etc 10.Secreting toxins or otherwise harmful substances such as digestive enzymes, etc 11. Death