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  1. Sandy appearance on electron microscopy (Arena means sand), due to the incorporation of the host cell ribosomes during assembly
  2. 110-130nm, pleomorphic, single strand RNA, negative sense, two segments, enveloped
  3. Natural hosts are the rodents in which they cause persistent infection with viraemia. Virus is shed in the urin
Diseases cause by viruses in the family arenaviridae
Virus Geographical distribution Human disease
Lymphocytic choriomeningitis worldwide Influenza-like illness, aseptic meningitis, rarely encephalomyelitis
Lassa West Africa Haemorrhagic fever
Junin Argentina Argentine haemorrhagic fever
Machupo Bolivia Bolivian haemorrhagic fever
Guanarito Venezuela Venezuelan haemorrhagic fever

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