Volume 3, Number 3—September 1997
Synopsis
Flea-borne Rickettsioses: Ecologic Considerations
Abdu F. Azad
, Suzana Radulovic, James A. Higgins, B. H. Noden, and Jill M. Troyer
, Suzana Radulovic, James A. Higgins, B. H. Noden, and Jill M. TroyerTable 3
Comparison of Rickettsia felis with other vector-borne Rickettsiae
| Species | Vector | 190 kDaa | 120/135kDab | 17 kDac | Hemolysis/plaqued | Phylogenye |
|---|---|---|---|---|---|---|
| R. prowazekii | louse | - | + | + | +/+ | TG |
| R. typhi | flea | - | + | + | +/+ | TG |
| R. canada | tick | - | + | + | -/- | TG |
| R. felis | flea | - | + | + | +/+ | SFG |
| R. akari | mite | + | + | + | -/+ | SFG |
| R. australis | tick | - | + | + | -/+ | SFG |
| R. rickettsii | tick | + | + | + | -/+ | SFG |
| R. conorii | tick | + | + | + | -/+ | SFG |
arOmpA (rickettsial outer membrane protein A). Although the presence of rOmpA gene sequences or gene product have not been shown in TG rickettsiae recently, DNA sequences fcorresponding to rOmpA were shown in the genome of R. prowazekii (24).
bAlso referred to rOmpB.
cAlso referred to as rickettsial inner membrane protein A.
dHemolysis of sheep red cells/plaque formation.
eTyphus group/spotted fever group rickettsiae.
+ indicates expression of gene products/growth characteristic.
