This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
A boy presented with multiple non suppurative osteomyelitis with sickle cell anaemia. What will be the causative organism? 
Select and explain. 
A. Salmonella, B. Staphylococus aureus, C. Hemophilus influenzae, D. Enterobacter species
A: Salmonella
Answer: A: Salmonella 
Explanation: Following are the various micro -organism involved in osteomyelitis Age group Most common organisms Newborns (younger than 4 mo) S. aureus, Enterobacter species, and group A and B Streptococcus species Children (aged 4 mo to 4 y) S. aureus, group A Streptococcus species, Haemophilus influenzae, and Enterobacter species Children, adolescents (aged 4 y to adult) S. aureus (80%), group A Streptococcus species, H. influenzae, and Enterobacter species Adult S. aureus and occasionally Enterobacter or Streptococcus species Sickle cell anemia patients Salmonella species are most common in patients with sickle cell disease REF: MAHESWARI 9TH ED