Colonization, Infection and Risk Factors for Death in an Infectious Disease ICU in Romania

Knowing the bacterial strains in the intensive care unit (ICU) is important for reducing the rate of bacterial transmission and the risk of healthcare-associated infections (HAIs), allowing for targeted interventions to reduce the risk of death by HAIs. We performed a retrospective case-control study in a single center that included 320 bacteriologically screened patients from the ICU of the Infectious Diseases Hospital in Constanta between September 2017 and March 2020. Sixty-five secondary bacterial infections were identified as the cause of hospital admission and 60 bacterial colonizations. There were 20 cases and 300 controls for the mortality rate and risk factors for death. Multivariate analysis identified that hospitalization of patients for HIV infection (OR 11.82, 95% CI: 1.69-83.62, P ≤0.05) and Clostridioides difficile infection (OR 7.38, 95% CI: 1.39 -39.22, P ≤ 0.05) were independent risk factors associated with death. We observed that the number of colonizations or secondary infections in the ICU was similar, and the mortality rate in the ICU was influenced by HIV infection or Clostridioides difficile infection

The Microbiota, Chemical Symbiosis, and Human Disease

Our understanding of mammalian-microbial mutualism has expanded by combing microbial sequencing with evolving molecular and cellular methods, and unique model systems. Here, the recent literature linking the microbiota to diseases of three of the key mammalian mucosal epithelial compartments – nasal, lung and gastrointestinal (GI) tract – is reviewed with a focus on new knowledge about the taxa, species, proteins and chemistry that promote health and impact progression toward disease. The information presented is further organized by specific diseases now associated with the microbiota:, Staphylococcus aureus infection and rhinosinusitis in the nasal-sinus mucosa; cystic fibrosis (CF), chronic obstructive pulmonary disorder (COPD), and asthma in the pulmonary tissues. For the vast and microbially dynamic GI compartment, several disorders are considered, including obesity, atherosclerosis, Crohn’s disease, ulcerative colitis, drug toxicity, and even autism. Our appreciation of the chemical symbiosis ongoing between human systems and the microbiota continues to grow, and suggest new opportunities for modulating this symbiosis using designed interventions