A key advantage of using IHC over traditional special stains for infectious agents is its **high specificity and ability to precisely identify the causative organism**. Special stains like Gram stain (for bacteria), Ziehl-Neelsen (for acid-fast bacteria like Mycobacterium tuberculosis), and GMS (for fungi) are based on general chemical or structural properties. They can indicate the presence of a category of organisms (e.g., Gram-positive cocci) but cannot identify the specific species. IHC, using antibodies against unique microbial antigens, can provide a definitive identification. For example, IHC can distinguish between different herpesviruses (HSV-1 vs. HSV-2 vs. CMV), confirm the presence of Tropheryma whipplei in Whipple's disease, or identify specific fungal species. This precise identification directly impacts antimicrobial therapy. Additionally, IHC can detect organisms present in low numbers, within macrophages, or with atypical morphology that might be missed by special stains.

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Zambia

• loveness Phiri – 1084 pts

• Visual Pathway Lesions
• Positive and Negative Symptoms
• Hallucinations and Delusions
• Antipsychotic Medications
• Emergency: Environmental Emergencies