<prompt> Pneumonia alba is due toKlebsiellaStreptococciTreponema PallidumStaphylococci  <response>: Pneumonia alba seen in neonates with congenital syphilis. Pneumonia alba white pneumonia is often seen in neonates with congenital syphilis. The lung may be firm and pale, owing to the presence of inflammatory cells and fibrosis in the alveolar septa. Spirochetes are readily demonstrable in tissue sections . Ref Davidson edition23rd pg 584 