1.2 Biological and medical parasitology

Medicine –(human and veterinary) is oriented to application. Biology involves interpretation (hermeneutics) without any particular intension. Each of the two aspects follows its own concepts and requires its separate conclusive terminology.

The pathogen determines the course of the disease, viz the symptoms, pathogenesis, diagnosis, therapy and prevention, at the level of the individual and the population. The parasitosis follows the life cycle of the parasite, the features of which include the specifity of the host and the attacked organ (body liquids, cells), anatomical structure and systematic classification. Both fields overlap in epidemiology and the physiology of the parasite-host relationship, particularly in immunology.

Parasites in Biology and medicine – a comparison
Biological aspect
Phases of Life cycle Ontogenesis Maturity Reproduction Ageing and death
Localisation of Parasite Invasion and migration Habitation Evasion
Phases of Parasitosis Prepatency Patency and Transferency Postpatency

Medical aspect
(without symptoms)

spontaneous healing

(specific symptoms)
Crisis chronic course
Prodromal stage
(non-specific symptoms)

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