说明：  病原体传播本体描述了人类疾病病原体从一个宿主、贮存器或来源到另一个宿主的传播方法。病原体传播可以直接或间接发生，并且可以涉及有生命的载体或无生命的载体。
(The Pathogen Transmission Ontology describes the transmission methods of human disease pathogens from one host, reservoir, or source to another host. The pathogen transmission may occur either directly or indirectly and may involve animate vectors or inanimate vehicles.)