This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Giant cell (Hecht's) pneumonia is due to - 
Select and explain. 
A. CMV, B. Measles, C. Malaria, D. P. Carinii
B: Measles
Answer: B: Measles 
Explanation: Most patients recover uneventfully but quite a few develop complication which may be due to virus or secondary bacterial infection. Rarely the virus may cause fatal giant cell pneumonia. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:512