Incubation period of infection in hospitalized patients and long-term care facility residents: a prospective cohort study.

Background: The incubation period for infection (CDI) is generally considered to be less than 1 week, but some recent studies suggest that prolonged carriage prior to disease onset may be common.

Objective: To estimate the incubation period for patients developing CDI after initial negative cultures.

Methods: In 3 tertiary care medical centers, we conducted a cohort study to identify hospitalized patients and long-term care facility residents with negative initial cultures for followed by a diagnosis of CDI with or without prior detection of carriage.

A pilot study to assess the impact of an educational patient hand hygiene intervention on acquisition of colonization with health care-associated pathogens.

Patient hand hygiene is a commonsense measure that has been associated with reductions in colonization or infection with bacterial and viral pathogens in quasi-experimental studies. We conducted a nonblinded pilot randomized trial to assess the impact of an educational patient hand hygiene intervention on acquisition of colonization by selected health care-associated pathogens in hospitalized patients. For patients with negative admission cultures, the intervention did not reduce the new acquisition of colonization by pathogens compared with that of standard care.