Infection Control Guide 2005

New Developments in the Infection Control War
Small world networks and
battles on the homefront
by Jeannie Akridge

Welcome to the HPN 2005 Annual Infection Control Guide. More products are being developed that address the complexity of infection control and safety for patients and healthcare staff. This year we’ve compiled more companies and more product choices then ever. We’ve also included an update on the importance of handwashing on page 46. As we all anticipate the spread of infection on a global basis - we hope this guide helps you in your preparation defense. Our comprehensive directory begins on page 48.

A message delivered a year ago in June, by the Centers for Disease Control and Prevention’s director Julie L. Gerberding, MD, MPH, foretold a year teeming with challenges, losses and victories in the never-ending battle of infection control. Presenting the keynote address at the annual meeting of the Association of Professionals in Infection Control (APIC) in Phoenix, AZ, Gerberding spoke of the need to recognize "small world networks" in which weak ties (people moving between communities) become a link to connect highly clustered communities. As examples, she cited the Hong Kong traveler who spread SARS throughout the world, and the American Midwest pet shop where the spread of monkeypox began. She then urged infection control professionals to be a strong link for learning…to promote health, prevent disease and improve preparedness to meet health challenges; to serve as knowledge managers, early warning leaders, expert spokespersons, global health ambassadors and patient advocates. She introduced new health priorities for the CDC with a focus on prevention and preparedness.

Over the next year, those in the healthcare profession would have their strength and resolve tested against numerous and unforeseen threats to global health. The WHO issued warnings that the avian flu could mutate and cause an unprecedented worldwide pandemic; and the U.S. faced a shortage of flu vaccine after a major manufacturer found contaminated doses and was forced to stop production.

On the sterile processing front, several incidents of improperly cleaned instruments put patients at risk of disease. Also in 2004, New Jersey became the first state to pass a mandatory CS certification law; and the FDA ruled that several single use devices were no longer safe to be reprocessed.

In December 2004, Health and Human Services Secretary Tommy Thomspon resigned, but not before issuing stern warnings about the threat of a global flu pandemic and the risk of a terrorist attack on the nation’s food supply. Days later, the FDA announced new, stricter food-tracking rules. Also in December, the Institute for Healthcare Improvement (IHI) announced its groundbreaking "100,000 Lives Campaign". The campaign aimed to enlist thousands of hospitals across the country, at no charge, in a commitment to implement changes in care that have been proven to prevent avoidable deaths. The response was overwhelmingly positive.

Then, just before the new year rolled over – in an eerie omen to the absolute need to be ever-vigilant – a killer tsunami washed ashore in southeast Asia, causing fear of typhoid, hepatitis, and other disease epidemics among shaken survivors and the world.

The first half of 2005 brought continued challenges with MRSA, which shut down a Vancouver hospital and was reported as reaching out into the community in record numbers. A rare and aggressive HIV was reported in New York; an epidemic of Marburg hemorrhagic fever ravaged Angola; and a killer virus was accidentally sent in lab samples throughout the world.

In February 2005, a report showed that U.S. hospital infections claimed more lives than AIDS, breast cancer and traffic accidents combined and warned that before the end of the year, such infections would claim over 100,000 lives and become the fourth largest killer of Americans. The Committee to Reduce Infection Deaths urged public pressure on hospitals to "clean up" by following basic hygiene procedures and to "come clean" by publicly disclosing infection rates. That same month, Maryland weighed a bill forcing data collection on hospital-acquired infections, joining several other states in a move toward mandatory infection reporting. The CDC stepped in in March, issuing guidelines to hospitals for reporting on infections.

Seeming to make good on Gerberding’s promise for heightened prevention and preparedness measures, in April 2005, the CDC announced a major reorganization that created four new coordinating centers designed to defend against a new breed of 21st century health threats.

As 2005 rolls on, infection control professionals and other healthcare workers need to continue to stand united against these 21st century health threats. Basic regimens such as proper hand washing and disinfecting surfaces will be combined with cutting edge technology to fight long-time enemies and emerging pathogens. HPN

Click here to see Infection Control Guide 2005

Washing hands and disinfecting surfaces still a primary defense

It can never be stressed enough the importance a simple act like hand washing can have on reducing the spread of viruses and other pathogens.

According to a study published in the Journal of Infection, it takes only one child coming home with the flu to contaminate nearly 60 percent of common household surfaces1. The study, conducted by researchers at The University of Arizona, Tucson, and funded by Clorox, evaluated the prevalence of the influenza A virus on surfaces in day care centers and homes with sick children to assess the potential role surfaces have in transmitting the flu virus. They found the flu virus on 59 percent of surfaces in homes that were sampled during March 2003 and 53 percent of surfaces in day care centers tested during the Spring. Viruses were found to be infective on hard surfaces for up to 48 hours and on wet surfaces for up to 72 hours.

Translate those numbers to the hospital environment and the risk of infection through transference from hands to surfaces and vice versa, is alarming.

The study noted that cleaning surfaces with disinfecting products can help reduce the possibility of viral transfer, transmission and possible infection.

"Washing hands and disinfecting surfaces is the biggest way to stop the spread", emphasized one of the study’s lead authors, Stephanie A. Boone, PhD. She stressed the need to wash hands both before and after contact with infected patients, and to frequently clean surfaces with a disinfectant, versus a sanitizer.

In a separate study, alcohol gel hand wipes were shown to be extremely effective at killing and removing germs2. In clinical studies, Sani Dex ALC Wipes from Professional Disposables International were shown to remove soil and kill 99.99% of harmful bacteria because of the natural friction caused by the wiping action. Additionally the alcohol gel hand wipe achieved a higher log10 reduction than the rub in alcohol hand gels. The study results suggested that the superior performance of the wipe was augmented by the physical removal of soil and bacteria.

Northridge Hospital Medical Center in California uses Sani Dex hand wipes to prevent cross-contamination from pets to humans in their pet therapy program. All staff, patients, volunteers and visitors are required to use the wipes before and after petting or handling the dogs.

Dr. Boone agreed that using a wipe does hold distinct cross-contamination benefits. "You’re wiping the virus off into the hand wipe and then you can toss it," she explained.

Wipes are also available to disinfect surfaces. Clorox makes Disinfecting Wipes that are safe to use on most hard, non-porous surfaces. Likewise, STERIS recently introduced its new Germicidal Surface Wipes product, a non-woven disposable cloth containing a stable, low pH formulated disinfectant and deodorant designed for use on hard, non-porous surfaces such as stainless steel, Formica, tables, carts, baskets, counters, cabinets and telephones. The STERIS wipes can be used throughout the hospital where control of cross-contamination is required. The product provides broad spectrum biocidal activity, including M. tuberculosis (TB) and HIV-1 (AIDS virus).

Continued warnings that the avian flu could mutate into a human form underscores the need to practice primary infection control measures such as hand washing. The University of Arizona study noted "Vaccine and antiviral drug usage are not enough to counter future pandemics or widespread outbreaks of influenza."1, 3

"The problem is that when a virus jumps species like the SARS virus, you have severe repercussions in humans," said Dr. Boone. Several factors influence a virus’ ability to spread out of control, she said. 1) Despite best efforts at vaccination; not everyone receives the vaccine. 2) It’s difficult to predict which virus to include in the vaccine. 3) It takes six to nine months to develop a new vaccine, which may not be quick enough to stop a widespread outbreak.

"In the event that there is a mutation and the transfer rate increases rapidly, you could suddenly have a pandemic on your hands," warned Dr. Boone. HPN

References:
1. "The Occurrence of Influenza A Virus on Household and Day Care Center Fomites." Stephanie A. Boone, Charles P. Gerba, Department of Soil, Water and Environmental Science, University of Arizona, Tuscon. 12 September 2004.

2. Hill Top Research Inc., Miamiville, OH. 30 November 2004.

3. Jong JC, Rimmelzwaan GF, Fouchier RAM, Oseterhaus ADME. Influenza A Virus: A master of metamorphosis. J Infect 2000; 40: 218-28.

May
2005