Ann Clin Microbiol 2020;23:33-43. Season and Temperature Effects on Bloodstream Infection Incidence in a Korean Tertiary Referral Hospital

Fig. 2. Correlation between bloodstream infection (BSI) by gram-negative bacilli and average monthly temperature from 2008–2016 based on Pearson’s correlation coefficient. (a) Temperature (°C) vs. incidence rate of community-onset BSI by E. coli (cases per 105 patient days), y = 0.540x+52.754, r = 0.3304, P = 0.0005. (b) Temperature (°C) vs. incidence rate of hospital-acquired BSI by E. coli (cases per 106 patient days), y = 0.128x+23.142, r = 0.1443, P = 0.1363. (c) Temperature (°C) vs. incidence rate of community-onset BSI by K. pneumoniae (cases per 105 patient days), y = 0.193x+22.874, r = 0.1986, P = 0.0394. (d) Temperature (°C) vs. incidence rate of hospital-acquired BSI by K. pneumoniae (cases per 106 patient days), y = 0.124x+20.931, r = 0.1094, P = 0.2596. CO, community-onset; HA, hospital-acquired; Temp., temperature.
(a) Community-onset BSI by E. coli
(b) Hospital-acquired BSI by E. coli
(c) Community-onset BSI by K. pneumoniae
(d) Hospital-acquired BSI by K. pneumoniae