5-year-old having fever and dysphagia was diagnosed with diphtheria. Which of the following complications will you not anticipate in him?
Antibodies against which of the following will be detected first by ELISA or Western blot?
Epidemic typhus is caused by which organism?
In a splenectomized patient, there is an increased risk of infection by all capsulated organisms. Which of the following is least likely to cause an infection in such patients?