Cellular fatty acid composition of WIGA, a rickettsia-like agent similar to the Legionnaires disease bacterium.

The cellular fatty acid composition of OLDA, a rickettsia-like agent isolated in 1947, was essentially identical to that of the Legionnaires disease bacterium (LDB). WIGA, another rickettsia-like agent isolated in 1959, contained the same fatty acids as OLDA and other LDB but differed significantly from these strains in relative amounts of the major acids present. The major acid of OLDA and other LDB was i-16:0 whereas a-15:0 was the major acid of WIGA.