TABLE 1 

Environmental strains used in this study

IsolateStrainOriginSourceDoubling time (h) at 37°C
1NIH120Pigeon nestChester Emmons, What Cheer, IA2.7
2NIH192SoilDexter Howard, Hot Springs, CA2.9
3NIH117Pigeon nestChester Emmons, Loudon County, VA2.8
4NIH118Pigeon guanoChester Emmons, Washington, DCa3.0
5NIH115SoilChester Emmons, Loudon County, VA2.5
6NIH119Pigeon nestChester Emmons, Washington, DCb2.9
7NIH193Pigeon coteDexter Howard, Westminster, CA2.6
8NIH316Chicken houseLibero Ajello, CDC3.0
9NIH404SoilHarold Muchmore, Oklahoma2.8
  • a Junior Village.

  • b Capitol dome.