<prompt> Giant cell Hechts pneumonia is due to -CMVMeaslesMalariaP. Carinii  <response>: 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 PANIKERS TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:512 