All of the following statements regarding TB case detection and notification under NTEP are correct EXCEPT:

Explanation

## NTEP Case Detection, Notification, and Contact Management ### Correct Statements (Options 0, 1, 3) **High-Yield:** The Nikshay portal mandates notification of all TB cases (public and private) within 2 weeks of diagnosis. Private sector notification has significantly improved case detection rates in India. **Key Point:** Sputum smear microscopy (AFB microscopy) remains the gold standard and primary diagnostic tool for TB screening in resource-limited settings, though newer tools like GeneXpert MTB/RIF are increasingly used. **Clinical Pearl:** TB-HIV co-infection requires urgent ART initiation. Guidelines recommend ART within 2 weeks of TB treatment start if CD4 count is <50 cells/μL (or <100 cells/μL for other conditions), as this reduces mortality significantly. ### Why Option 2 is INCORRECT **Warning:** Contact tracing and isoniazid preventive therapy (IPT) have **specific eligibility criteria** — they are NOT given to all household contacts regardless of TST status. **Key Point:** IPT eligibility criteria include: 1. **Close contacts of TB patients** (household/workplace) 2. **TST-positive** (≥5 mm induration in immunocompromised; ≥10 mm in immunocompetent) 3. **No active TB disease** (ruled out clinically and radiologically) 4. **Age considerations:** Particularly important in children <5 years IPT is **NOT** given to: - TST-negative contacts (unless immunocompromised, e.g., HIV+) - Contacts with active TB disease - Those with contraindications to isoniazid ### Contact Management Algorithm ```mermaid flowchart TD A[TB Patient Identified]:::outcome --> B[Household/Close Contacts Identified]:::action B --> C{Clinical/Radiological Signs of TB?}:::decision C -->|Yes| D[Investigate for Active TB]:::action C -->|No| E{TST Status?}:::decision D --> F[Treat as TB if Confirmed]:::urgent E -->|TST Positive| G[No Contraindications to INH?]:::decision E -->|TST Negative| H[Observe, Counsel on Symptoms]:::action G -->|Yes| I[IPT for 6 months]:::action G -->|No| J[Alternative Regimen/Observe]:::action ``` ### Contact Tracing vs. IPT Eligibility | Criterion | Contact Tracing | IPT Eligibility | |-----------|-----------------|------------------| | **TST Status** | All contacts traced | TST+ required (except HIV+) | | **Active TB Ruled Out** | Yes | Yes | | **Age** | All ages | Particularly <5 years | | **INH Contraindication** | No | Contraindication excludes | [cite:Park 26e Ch 8; WHO TB Guidelines 2023] --- ## Summary **Key Point:** IPT is NOT given to all household contacts. It requires: - TST positivity (or immunocompromised status) - Exclusion of active TB - Absence of contraindications to isoniazid Universal IPT without these criteria would lead to unnecessary drug exposure and resistance.