| Culex quinquefasciatus (SMB 16)     |   |       Adults intrathoracically inoculated:  multiplication demonstrated by titration of whole mosquitoes, content per mosquito 1.9 dex immediately after inoculation, 1.3 dex at 12 and 24 hours, 5.0 dex  at 7 days, 3.5 dex at 15 days.  Serial weekly passage of salivary gland inoculated into thorax  maintained  virus for 2 passages but not for 3. (4)        |