Of the nature of a rickettsia; of, relating to, or caused by rickettsiae.

a flavivirus originally isolated in eastern Africa, which is transmitted by mosquitoes, usually between birds, but can cause epidemics of disease…

attributive. Designating the human disease caused by this virus, a febrile illness often complicated by encephalitis or meningitis; esp. in West Nile…

Used attributively to designate any group of pathogenic enteroviruses or the diseases associated with them.

Medicine. Designating any of a group of diseases caused by viruses or virus-like agents which are characterized by a long period of latency and a…

attributive. Designating the disease caused by Norwalk or Norwalk-like viruses.