Pathogenesis ● Host resistance Opportunistic Accidental Innate immunity (protozoa) infections Acquired immunity ● Parasite Invasion Toxin Mechanically damage Immune impair ● Immune inhibition hypersentivityPathogenesis • Host Resistance – Innate immunity – Acquired immunity • Parasite Invasion – Toxin – Mechanically damage – Immune impair • Immune inhibition • hypersentivity Opportunistic & Accidental (protozoa) infections