| Date | 1841 |
| Author | Muller, J. |
| Contribution | Described psorospermosis. |
| Reference | Anon. |
| Notes | Not cited in G&M or Ainsworth. Rash associated with infection with psorosperms -- a term formerly and loosely applied to parasitic protozoa other than haemosporidia. Psor = itch; sperm = seed. Included Brooke's Disease and Darier's Disease. Not known whether Müller postulated microbial causation. |
| Category | Miscellany |
| Pathogen Class | Protozoa |
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