Tatlockia micdadei Legionella pittsburghensis Legionella micdadei is a Gram-negative bacterium from the genus Legionella, which stains acid-fast.

It stains weakly, but loses this trait upon being grown in culture.

Tatlockia micdadei is an alternative term for L. micdadei, the Pittsburgh pneumonia agent and TATLOCK strain.

[2] It is named after Joseph E. McDade, who first isolated L.

This Legionellales article is a stub.