Microbiology Which of the following statements is true about BCG vaccination? A Distilled water is used as diluent for BCG B The site of injection should be cleaned with spirit C Mantoux test becomes positive after 48 hours of vaccination D WHO recommends Danish 1331 strain for vaccine production 💡 Explanation Which of the following statements is true about BCG vaccination? ✓ Correct Answer: D. WHO recommends Danish 1331 strain for vaccine production