Lives on/in host and get nutrients from the host.
Parastic organisms
Escherichia coli, Staphylococcus aureus, Neisseria meningitides, Mycobacterium tuberculosis
Viral organisms
Fungal organisms
Bacteria
Sarcoptes scabiei (scabies) Plasmodium (malaria) Protozoan infection (amebiasis)
Candidiasis Coccidioidomycosis Aspergillosis Histoplasmosis
HIV, Influenza, Hepatitis A, RSV, Herpes
Bacterial organisms
Fungi
mycotic infections
Virus
Parasites
Single-celled rigid wall organisms w/out organelles.
Invade and alter genetic material of cell.
