Researchers report on their study of households with an influenza-infected child to measure the prevalence of influenza contamination, the effect of handwashing, and associations with humidity and temperature; their research appears in the latest issue of Clinical Infectious Diseases.
Simmerman, et al. (2010) identified children with influenza and randomly assigned their households to handwashing and control arms. Six common household surfaces and the fingertips of the index patient and symptomatic family members were swabbed. Specimens were tested by real-time reverse-transcription polymerase chain reaction (rRT-PCR), and specimens with positive results were placed on cell culture. A handheld psychrometer measured meteorological data.
The researchers report that 16 of 90 households (17.8 percent) had influenza A-positive surfaces by rRT-PCR, but no viruses could be cultured. The fingertips of 15 (16.6 percent) of the index patients had results positive for influenza A, and one virus was cultured. Index patients with seasonal influenza infections shed more virus than did patients with pandemic influenza infection. Control households had a higher prevalence of surface contamination (11 of 45) than did handwashing households (5 of 45). Households in which the age of the index patient was 8 years had a significantly higher prevalence of contamination.
Simmerman, et al. (2010) conclude that homes with younger children were more likely than homes of older children to have contaminated surfaces, and that lower absolute humidity favors surface contamination in households with multiple infections. They add that increased handwashing can reduce influenza contamination in the home.
Reference: Simmerman JM, Suntarattiwong P, Levy J, Gibbons RV, Cruz C, Shaman J, Jarman RG and Chotpitayasunondh T. Influenza Virus Contamination of Common Household Surfaces during the 2009 Influenza A (H1N1) Pandemic in Bangkok, Thailand: Implications for Contact Transmission. Clinical Infectious Diseases 2010;51:10531061.
The Next Frontier in Infection Control: AI-Driven Operating Rooms
Published: July 15th 2025 | Updated: July 15th 2025Discover how AI-powered sensors, smart surveillance, and advanced analytics are revolutionizing infection prevention in the OR. Herman DeBoard, PhD, discusses how these technologies safeguard sterile fields, reduce SSIs, and help hospitals balance operational efficiency with patient safety.
A Helping Hand: Innovative Approaches to Expanding Hand Hygiene Programs in Acute Care Settings
July 9th 2025Who knew candy, UV lights, and a college kid in scrubs could double hand hygiene adherence? A Pennsylvania hospital’s creative shake-up of its infection prevention program shows that sometimes it takes more than soap to get hands clean—and keep them that way.
How Contaminated Is Your Stretcher? The Hidden Risks on Hospital Wheels
July 3rd 2025Despite routine disinfection, hospital surfaces, such as stretchers, remain reservoirs for harmful microbes, according to several recent studies. From high-touch areas to damaged mattresses and the effectiveness of antimicrobial coatings, researchers continue to uncover persistent risks in environmental hygiene, highlighting the critical need for innovative, continuous disinfection strategies in health care settings.
Streamlined IFU Access Boosts Infection Control and Staff Efficiency
June 17th 2025A hospital-wide quality improvement project has transformed how staff access critical manufacturer instructions for use (IFUs), improving infection prevention compliance and saving time through a standardized, user-friendly digital system supported by unit-based training and interdepartmental collaboration.