Question

What causes Haemophilus pneumonia in individuals over the age of 70? A. Encapsulated strains of Haemophilus...

What causes Haemophilus pneumonia in individuals over the age of 70?

  • A. Encapsulated strains of Haemophilus influenzae

  • B. Small, gram-negative coccobacillus

  • C. Nonencapsulated strains of Haemophilus influenzae

  • D. Two of the above

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Answer #1

Answer D- two of the above

Haemophillus influenzae causes haemophilus pneumonia and meningitis in old age pateints above the age of 65 years. There are two strains of heamophilus influenzae encapsulated also called as typeable and non-encapsulated also called as non-typeable. They are gram negative cocobacilli. The encapsulated or typeable haemophilus influenzae causes most of the cases of pneumonia in the elderly patients. Whereas, the non-encapsulated or non-typeable strain causes chronic bronchitis in elderly and ear infections in children.

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