A one year old, fully vaccinated child presents with pharyngitis, but no rhinitis.
Which one of the organisms listed below is the most likely cause of her condition?
Which one of the following is not commonly associated with Group A streptococcus infection?
Which one of the statements about infection with Mycobacterium tuberculosis is correct?
Which one of the following statements about the laboratory diagnosis of Mycobacterium tuberculosis is correct?
A patient undergoing surgery for peritonitis due to perforated viscus was treated with i.v. ceftriaxone and metronidazole for surgical prophylaxis.
Which one of the following options best describes the rationale for this therapy?