Volume 23, Number 11—November 2017
Dispatch
Street Cleaning Trucks as Potential Sources of Legionella pneumophila
Natalia Valero
, Mercè de Simón, Pau Gallés, Neus Izquierdo, Jaume Arimon, Raquel González, Sandra Manzanares-Laya, Ingrid Avellanes, and Anna Gómez
, Mercè de Simón, Pau Gallés, Neus Izquierdo, Jaume Arimon, Raquel González, Sandra Manzanares-Laya, Ingrid Avellanes, and Anna Gómez
Table
Counts of Legionella pneumophila serogroups 1 and 2–15 in the samples of water, foam, and smears analyzed before and after cleaning and disinfection of 2 street cleaning trucks, Barcelona, Spain, 2015*
| Location and sample type |
Before cleaning and disinfection, CFU/L |
After cleaning and disinfection, CFU/L |
|||
| L. pneumophila serogroup 1 |
L. pneumophila serogroups 2–15 |
L. pneumophila serogroup 1 |
L. pneumophila serogroups 2–15 |
||
| Truck 1 | |||||
| Water tank | 150 | <1† | 400 | <1 | |
| Hose water | 150 | <1 | 5,700 | <1 | |
| Foam sample 1 | NA | NA | 250‡ | Not detected | |
| Foam sample 2 | NA | NA | 5,500‡ | Not detected | |
| Tank surface smear |
NA |
NA |
Detected |
Not detected |
|
| Truck 2 | |||||
| Water tank | 1,000 | 1,000 | 125 | 125 | |
| Hose water | <1 | 50 | <1 | 50 | |
| Foam sample 1 | NA | NA | 275‡ | 125‡ | |
| Foam sample 2 | NA | NA | 10‡ | 10‡ | |
| Foam sample 3 | NA | NA | Not detected | 10‡ | |
| Foam sample 4 | NA | NA | 10‡ | Not detected | |
| Tank surface smear | NA | NA | Not detected | Not detected | |
*NA, not analyzed.
†Limit of detection in water samples: 1 CFU/L.
‡Counts for 250 cm3 of foam.
Page created: October 17, 2017
Page updated: October 17, 2017
Page reviewed: October 17, 2017
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