Medicine prophylaxis for Pneumocystis carinii is indicated in HIV positive patents When CD4 count is- A <300 cells/mm3 B < 200 cells / mm3 C < 100 cells/mm3 D < 50 cells / mm3 💡 Explanation prophylaxis for Pneumocystis carinii is indicated in HIV positive patents When CD4 count is- ✓ Correct Answer: B. < 200 cells / mm3