| Date | 1897 |
| Author | MacCullum |
| Contribution | Described sexual phase in life-cycle of human and avian malaria. |
| Reference | Bruce-Chwatt |
| Notes | Observation of part of the phase (exflagellation) had been an important event in the early work of Ronald Ross on the role of mosquitos in malaria transmission. |
| Category | Miscellany |
| Pathogen Class | Protozoa |
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