All of the following are recognized contraindications to breastfeeding EXCEPT:

Explanation

## Contraindications to Breastfeeding: A Systematic Review **Key Point:** Hepatitis B surface antigen (HBsAg) positivity is NOT an absolute contraindication to breastfeeding if the infant receives appropriate immunoprophylaxis (HBIG and hepatitis B vaccine series) within 12 hours of birth. The virus is present in breast milk but does not cause infection when the infant is vaccinated. ### Absolute Contraindications to Breastfeeding | Maternal Condition | Reason | Breastfeeding Safe? | |---|---|---| | **Active untreated TB (pulmonary)** | Airborne transmission of *Mycobacterium tuberculosis* to infant via respiratory droplets, not breast milk | NO — separate until mother on treatment for ≥2 weeks | | **Varicella-zoster (active chickenpox)** | Highly contagious via respiratory route; risk of severe neonatal varicella | NO — separate until all lesions crusted; expressed milk is safe | | **Methotrexate therapy** | Teratogenic; excreted in breast milk; risk of bone marrow suppression in infant | NO — absolutely contraindicated | | **Hepatitis B (HBsAg+)** | Virus present in milk BUT infant vaccination + HBIG prevents infection | YES — safe with proper infant prophylaxis | | **Hepatitis C (anti-HCV+)** | Virus NOT reliably transmitted via breast milk; safe if no cracked nipples | YES — generally safe | | **HIV (in resource-rich settings)** | High viral load in breast milk; formula feeding is alternative | NO — not recommended | **High-Yield:** HBsAg positivity alone does NOT contraindicate breastfeeding in the context of neonatal vaccination and HBIG prophylaxis. This is a high-yield distinction on NEET PG. ### Why the Other Options Are Contraindications 1. **Untreated active TB (pulmonary):** Airborne transmission risk is the primary concern, not breast milk transmission. Breastfeeding is contraindicated until mother has received ≥2 weeks of appropriate anti-TB therapy. 2. **Methotrexate:** Classified as contraindicated in lactation due to potential immunosuppression and teratogenic effects in the nursing infant. 3. **Active varicella-zoster (chickenpox):** Highly contagious respiratory virus. Mother should be separated from infant until all lesions are crusted (typically 5–7 days). Expressed breast milk is safe and should be given to the infant. **Clinical Pearl:** The distinction between "no breastfeeding" and "no direct contact" is critical. A mother with active varicella can express milk for the infant while being separated to prevent respiratory transmission. **Mnemonic — Breastfeeding Safety in Maternal Infections:** **"CHIT"** - **C** — Chickenpox (active): NO direct contact; expressed milk OK - **H** — Hepatitis B (HBsAg+): YES, with infant prophylaxis - **I** — Infections (TB, untreated): NO, until treated - **T** — Teratogenic drugs (methotrexate): NO