Weather parameters and nosocomial bloodstream infection: a case-referent study
OBJECTIVE To evaluate if temperature and humidity influenced the etiology of bloodstream infections in a hospital from 2005 to 2010. METHODS The study had a case-referent design. Individual cases of bloodstream infections caused by specific groups or pathogens were compared with several references....
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2015-01-01
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| Series: | Revista de Saúde Pública |
| Subjects: | |
| Online Access: | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0034-89102015000100216&lng=en&tlng=en |
| _version_ | 1818153698422947840 |
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| author | Silvia Maria Caldeira Antonio Ribeiro da Cunha Renata Tamie Akazawa Rayana Gonçalves Moreira Lenice do Rosário de Souza Carlos Magno Castelo Branco Fortaleza |
| author_facet | Silvia Maria Caldeira Antonio Ribeiro da Cunha Renata Tamie Akazawa Rayana Gonçalves Moreira Lenice do Rosário de Souza Carlos Magno Castelo Branco Fortaleza |
| author_sort | Silvia Maria Caldeira |
| collection | DOAJ |
| description | OBJECTIVE To evaluate if temperature and humidity influenced the etiology of bloodstream infections in a hospital from 2005 to 2010. METHODS The study had a case-referent design. Individual cases of bloodstream infections caused by specific groups or pathogens were compared with several references. In the first analysis, average temperature and humidity values for the seven days preceding collection of blood cultures were compared with an overall “seven-days moving average” for the study period. The second analysis included only patients with bloodstream infections. Several logistic regression models were used to compare different pathogens and groups with respect to the immediate weather parameters, adjusting for demographics, time, and unit of admission. RESULTS Higher temperatures and humidity were related to the recovery of bacteria as a whole (versus fungi) and of gram-negative bacilli. In the multivariable models, temperature was positively associated with the recovery of gram-negative bacilli (OR = 1.14; 95%CI 1.10;1.19) or Acinetobacter baumannii (OR = 1.26; 95%CI 1.16;1.37), even after adjustment for demographic and admission data. An inverse association was identified for humidity. CONCLUSIONS The study documented the impact of temperature and humidity on the incidence and etiology of bloodstream infections. The results correspond with those from ecological studies, indicating a higher incidence of gram-negative bacilli during warm seasons. These findings should guide policies directed at preventing and controlling healthcare-associated infections. |
| first_indexed | 2024-12-11T14:14:45Z |
| format | Article |
| id | doaj.art-d1d0d1ddabac406892b242fb440f3044 |
| institution | Directory Open Access Journal |
| issn | 0034-8910 |
| language | English |
| last_indexed | 2024-12-11T14:14:45Z |
| publishDate | 2015-01-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Revista de Saúde Pública |
| spelling | doaj.art-d1d0d1ddabac406892b242fb440f30442022-12-22T01:03:13ZengUniversidade de São PauloRevista de Saúde Pública0034-89102015-01-014901710.1590/S0034-8910.2015049005438S0034-89102015000100216Weather parameters and nosocomial bloodstream infection: a case-referent studySilvia Maria CaldeiraAntonio Ribeiro da CunhaRenata Tamie AkazawaRayana Gonçalves MoreiraLenice do Rosário de SouzaCarlos Magno Castelo Branco FortalezaOBJECTIVE To evaluate if temperature and humidity influenced the etiology of bloodstream infections in a hospital from 2005 to 2010. METHODS The study had a case-referent design. Individual cases of bloodstream infections caused by specific groups or pathogens were compared with several references. In the first analysis, average temperature and humidity values for the seven days preceding collection of blood cultures were compared with an overall “seven-days moving average” for the study period. The second analysis included only patients with bloodstream infections. Several logistic regression models were used to compare different pathogens and groups with respect to the immediate weather parameters, adjusting for demographics, time, and unit of admission. RESULTS Higher temperatures and humidity were related to the recovery of bacteria as a whole (versus fungi) and of gram-negative bacilli. In the multivariable models, temperature was positively associated with the recovery of gram-negative bacilli (OR = 1.14; 95%CI 1.10;1.19) or Acinetobacter baumannii (OR = 1.26; 95%CI 1.16;1.37), even after adjustment for demographic and admission data. An inverse association was identified for humidity. CONCLUSIONS The study documented the impact of temperature and humidity on the incidence and etiology of bloodstream infections. The results correspond with those from ecological studies, indicating a higher incidence of gram-negative bacilli during warm seasons. These findings should guide policies directed at preventing and controlling healthcare-associated infections.http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0034-89102015000100216&lng=en&tlng=enInfecção Hospitalar, etiologiaTemperatura AmbienteUmidadeInfecções Bacterianas e Micoses, microbiologia |
| spellingShingle | Silvia Maria Caldeira Antonio Ribeiro da Cunha Renata Tamie Akazawa Rayana Gonçalves Moreira Lenice do Rosário de Souza Carlos Magno Castelo Branco Fortaleza Weather parameters and nosocomial bloodstream infection: a case-referent study Revista de Saúde Pública Infecção Hospitalar, etiologia Temperatura Ambiente Umidade Infecções Bacterianas e Micoses, microbiologia |
| title | Weather parameters and nosocomial bloodstream infection: a case-referent study |
| title_full | Weather parameters and nosocomial bloodstream infection: a case-referent study |
| title_fullStr | Weather parameters and nosocomial bloodstream infection: a case-referent study |
| title_full_unstemmed | Weather parameters and nosocomial bloodstream infection: a case-referent study |
| title_short | Weather parameters and nosocomial bloodstream infection: a case-referent study |
| title_sort | weather parameters and nosocomial bloodstream infection a case referent study |
| topic | Infecção Hospitalar, etiologia Temperatura Ambiente Umidade Infecções Bacterianas e Micoses, microbiologia |
| url | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S0034-89102015000100216&lng=en&tlng=en |
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