Effectiveness of ceftazidime-avibactam versus ceftolozane-tazobactam for multidrug-resistant Pseudomonas aeruginosa infections in the USA (CACTUS): a multicentre, retrospective, observational study.

Background: Ceftolozane-tazobactam and ceftazidime-avibactam are preferred treatment options for multidrug-resistant Pseudomonas aeruginosa infections; however, real-world comparative effectiveness studies are scarce. Pharmacokinetic and pharmacodynamic differences between the agents might affect clinical response rates. We aimed to compare the effectiveness of ceftolozane-tazobactam and ceftazidime-avibactam for treatment of invasive multidrug-resistant P aeruginosa infections.

Infection prevention and control in long-term care facilities in Florida: A needs assessment survey.

Background: Although several surveys of infection prevention and control (IPC) practices have been conducted in the United States, none have focused on the state of Florida, which has the fourth-largest number of certified nursing facilities in the country. A needs assessment survey was conducted to better understand the specific needs and practices of individuals responsible for IPC in long-term care facilities (LTCFs) in Florida.

Methods: In November and December of 2022, a 90-question online survey was distributed to individuals responsible for IPC activities at 3,690 LTCFs in Florida.

Development and implementation of learning collaboratives for infection prevention and control education in long-term care facilities.

Infections in long-term care facilities pose a critical challenge, with 1 to 3 million serious infections annually and up to 380,000 associated deaths. The vulnerability of aging populations and inadequate infection prevention and control programs underscore the need for intervention. This initiative provided tailored continuing education through 8 virtual learning collaboratives serving 541 infection preventionists.

An optical system for cellular mechanostimulation in 3D hydrogels.

We introduce a method utilizing single laser-generated cavitation bubbles to stimulate cellular mechanotransduction in dermal fibroblasts embedded within 3D hydrogels. We demonstrate that fibroblasts embedded in either amorphous or fibrillar hydrogels engage in Ca signaling following exposure to an impulsive mechanical stimulus provided by a single 250 µm diameter laser-generated cavitation bubble. We find that the spatial extent of the cellular signaling is larger for cells embedded within a fibrous collagen hydrogel as compared to those embedded within an amorphous polyvinyl alcohol polymer (SLO-PVA) hydrogel.