Green waste compost as potential reservoirs of Legionella in the Netherlands.
Clin Microbiol Infect
; 26(9): 1259.e1-1259.e3, 2020 Sep.
Article
em En
| MEDLINE
| ID: mdl-32470567
ABSTRACT
OBJECTIVES:
Legionella is a bacterial species able to cause influenza-like illness (Pontiac fever) or severe pneumonia (Legionnaires disease, LD). We assessed Legionella presence and concentration in composting facilities in The Netherlands.METHODS:
A total of 142 samples from 23 green waste composting facilities were screened for Legionella DNA using qPCR.RESULTS:
Of 142 samples, Legionella spp. DNA was detected in 97 (68%), and the subspecies L. pneumophila and L. longbeachae in 33 (23%) and one (0.7%) samples, respectively. Legionella was observed in samples from all composting facilities. The concentration of Legionella spp. DNA ranged from 103 to 105 genomic units (GU)/gram. Compost temperature was negatively correlated with the presence (odds ratio 0.67, 95% CI 0.50-0.92 per 10 degrees increase) and concentration (geometric mean ratio 0.90, 95% CI 0.83-0.97 per 10 degrees) of Legionella spp. Average humidity in the week prior to sampling was negatively correlated with the L. pneumophila concentration (geometric mean ratio 0.73, 95% CI 0.56-0.96 per increase in 10% of humidity).DISCUSSION:
This study suggests that composting facilities can be regarded as reservoirs of Legionella in The Netherlands, but additional studies should target if such facilities represent a human health risk.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Microbiologia do Solo
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Legionella
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Compostagem
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article