Central venous catheter infections are common preventable adverse events among hospital patients. Microbes may enter catheter hubs, also known as needleless connectors, and result in downstream contamination. This study aims to compare alcohol disinfection of catheter hubs to disinfection with chlorhexidine gluconate in alcohol, which has been proven to be a superior disinfectant at the site of central venous catheter insertion. Scrub duration of central venous catheter hubs will also be evaluated.