传播感染可见于免疫受损病人，这种类型的感染包括真菌。图示曲霉菌的分枝状菌丝正侵入脑血管。曲霉菌趋于侵入血管，导致出血和血栓。
Disseminated infections can be seen in immunocompromised hosts. Such infections can include fungi. Seen here are branching hyphae of Aspergillus invading a cerebral vessel. Aspergillus likes to invade vessels and produce hemorrhage and thrombosis.