Archive for the ‘Flu’ Category

Flu Vaccination Blitz Needed for Long-term Healthcare Workers

Friday, October 5th, 2012

Patient being given a flu vaccination.The flu vaccine represents the single best strategy for preventing the flu, according to the US Centers for Disease Control and Prevention (CDC).  Many healthcare workers are vaccinated every year to help reduce their risk of contracting the flu and spreading it to their patients and families.  Long-term care patients in particular may be prone to serious complications from the flu, so it is important for them and their caregivers to be vaccinated.  There is unsettling news from CDC, however, that staff in long-term care facilities lag behind their colleagues in other healthcare environments in getting their flu vaccinations. This leaves the already high-risk population in long-term care facilities potentially more susceptible to seasonal flu.

The new CDC study finds flu vaccination rates among long-term care physicians and nurses and other healthcare personnel in the 2011-2012 flu season was only 50.2 percent compared to the overall rate among healthcare workers of 66.9 percent. Among healthcare workers, the highest vaccination rates were reported among hospital doctors (86.7 percent) and nurses (78.1 percent). But whereas flu vaccination rates rose among most monitored healthcare worker groups between the last two flu seasons, rates fell among long-term care facility workers. CDC reports that when healthcare workers were asked why they did not obtain a flu shot, the most common responses were:

About the Flu Vaccine, aka the “Flu Shot”

The flu vaccine, popularly called the “flu shot,” consists of a biological agent that stimulates the human body’s immune system to recognize and destroy influenza viruses. Vaccines may be administered through an injection or using a nasal spray.

Each spring a group of scientists meet to take their best guess at which flu strains are likely to be circulating in the upcoming winter. They choose three and the vaccine is developed to destroy those viruses. Sometimes the scientists guess correctly and sometimes they do not. Because circulating flu strains vary over time, people need to be vaccinated each year to maximize their level of protection from flu.

  • A belief that they did not need it (28.1 percent)
  • Concern about vaccination effectiveness (26.4 percent)
  • Concern about side effects (25.1 percent)

Needed: An Intervention Strategy

To help improve flu vaccination coverage, CDC recommends medical care facilities develop a comprehensive intervention strategy. Educational outreach, an important part of that strategy, should emphasize the effectiveness and safety of flu vaccines as well as how the flu is transmitted and the benefits of the vaccine to staff, patients and family.

Last month the Duke University Health Systems held a 24-hour flu vaccination “blitz” (news report). Duke and ten other health centers in the Triangle area of North Carolina set up free flu vaccination stations for staff in well-traveled areas such as the front entrances of hospitals, entrances to cafeterias, and near elevators and conference rooms; staffers vaccinated each other on wards. The goal of the blitz was to vaccinate 10,000 healthcare workers to both reduce flu incidence and conduct a drill for a potential pandemic flu situation.

The Duke blitz can serve as a model for long-term care facilities. It could go a long way toward raising flu vaccination rates among caregivers in constant contact with our elderly and infirm.

Barbara M. Soule, R.N. MPA, CIC, FSHEA is an Infection Preventionist and a member of the Water Quality & Health Council.

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Norovirus: The “Stomach Flu” That is Not a Flu

Friday, February 3rd, 2012

Norovirus is a highly contagious virus that causes flu-like symptoms of nausea, vomiting, diarrhea and abdominal cramping.Norovirus is a highly contagious virus that causes flu-like symptoms of nausea, vomiting, diarrhea and abdominal cramping.

(Image from CDC website)

The dreaded “stomach flu” that hits particularly hard in winter is not a flu at all. It is norovirus, a highly contagious virus that causes symptoms of diarrhea, vomiting and stomach cramping. According to the Centers for Disease Control and Prevention (CDC), the illness often begins suddenly and lasts for one to two days with no long-term adverse health effects. True “flu” is a respiratory disease caused by the influenza viruses; sometimes the “true flu” can also cause gastrointestinal symptoms similar to norovirus. Getting an annual flu vaccine can help prevent flu; unfortunately, there is no vaccine for the norovirus and antibiotics, useful only for bacterial infections, do not help.

Norovirus is extremely common and has gained notoriety as a vacation cruise spoiler and an unwelcome visitor in child and adult care facilities, schools, restaurants, hospitals and dormitories. Norovirus particles are extremely small and are discharged by the billions in the stool or vomit of infected people, according to CDC. Yet, fewer than 100 virus particles are highly likely to make a person sick. The virus spreads through direct contact with an infected person or when an individual touches a contaminated surface and then touches their mouth or even their nose.

A 2011 study found norovirus is the leading cause of foodborne illness in the US, responsible for 5.5 million cases each year. In many cases, sick food handlers are responsible for these outbreaks. Eating foods contaminated with norovirus is a leading cause of hospitalizations.

Recipe for an Outbreak

Close quarters and a breakdown in sanitation is the simple recipe for a norovirus outbreak. Attention to surface disinfection is critical to controlling the spread of norovirus. Proper hand washing is another “must” as the virus can be transmitted easily via contaminated hands. It is important to know that a norovirus carrier can infect others for at least three days after recovery.

These steps, from CDC, can help reduce your risk of contracting norovirus:

  • Wash your hands carefully with soap and water, especially after using the toilet and changing diapers and always before eating or preparing food.
  • Carefully wash fruits and vegetables, and cook oysters and other shellfish thoroughly before eating them.
  • If infected with norovirus, do not prepare food for others while experiencing symptoms and for three days after recovery (see Norovirus: Food Handlers).
  • After throwing up or having diarrhea, immediately clean and disinfect contaminated surfaces by using a solution made with chlorine bleach and water:

Disinfecting against Norovirus with Chlorine Bleach

Disinfection Scenario Regular Household Bleach Dilution Cleanup and Disinfection Directions
1Hard surfaces such as non-porous floors, counter-tops, sinks, toilets 5 tablespoons of bleach in 1 gallon of water
(1000 ppm)

CLEAN-UP: Wearing gloves and other protective clothing, wipe up any vomitus or stool with paper towels and dispose in a plastic trash bag. Rinse hard surfaces with water; use kitty litter or other absorbent substance on carpeted areas to absorb liquid.
DISINFECTION: Apply bleach solution to affected area and allow to remain wet for 10 minutes. Allow to air dry. Rinse with clean water if food preparation area. Remove gloves and discard in plastic bag. Wash hands with soap and water or use an alcohol hand gel immediately after removing gloves.
2Porous surfaces, including wooden floors 1 2/3 cup bleach in 1 gallon of water (5000 ppm)
2Routine disinfection of stainless steel food/mouth contact items; toys 1 tablespoon bleach in 1 gallon water (200 ppm) Clean object first and then apply disinfectant solution. Allow to air dry.
  • Immediately remove and wash clothing or linens that may be contaminated with vomit or stool. Handle soiled items carefully—without agitating them—to avoid spreading the virus. If available, wear rubber or disposable gloves while handling soiled clothing or linens and wash hands after handling. Soiled items should be washed with detergent at the maximum available cycle length and then machine dried.

Joan Rose, PhD, is the Homer Nowlin Chair in Water Research at Michigan State University and a member of the Water Quality and Health Council.

1http://emergency.cdc.gov/disasters/disease/pdf/diarrhea-evac.pdf
2http://health.utah.gov/epi/diseases/norovirus/Guidelines_for_Environmental_Cleaning_125846_7.pdf

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Rapid Influenza Tests Often Fail to Detect H1N1

Wednesday, December 9th, 2009

Doctors’ offices and hospitals are using “rapid influenza diagnostic tests” to identify the presence of the H1N1 flu in patients; however, these tests actually do a poor job of sniffing out H1N1 because the rapid test does not detect H1N1, only influenza A. A confirmatory test must be done to identify H1N1 – a strain of influenza A.

Scientists confirmed this theory recently in a report published in The Journal of the American Medical Association, which found that one-third of California patients hospitalized with H1N1 flu were given a rapid test that came back negative. A different test that uses more sophisticated technology confirmed they had H1N1.

The discrepancy is caused by the high specificity (80-90 percent) and the low sensitivity (10-70 percent) of the rapid test for influenza A. The test often does not identify influenza A, especially in adults, who don’t shed as much virus as children. Therefore, correctly identifying those with influenza A, which could be either H1N1 or seasonal flu, is the real issue with the rapid tests. Since about 90 percent of circulating influenza A is H1N1, doctors can be fairly sure that anyone with flu-like symptoms who is also positive for influenza A – either on the rapid or more advanced tests – has H1N1 flu. But, there is still a 10 percent chance that it is seasonal flu.

Regardless, many are not taking the chance that their illness could be something other H1N1. Dartmouth pediatrician Hank Bernstein, who’s on the American Academy of Pediatrics’ infectious diseases committee, said in a recent USA Today article, if symptoms look like the flu, “it’s H1N1 until proven otherwise, almost.”

Stephen Baum, an infectious-disease physician at New York’s Albert Einstein College of Medicine, in the same USA Today story, says: “If you test positive, you got it. If it’s negative, you may still got it.”

Therefore, it is important to understand the symptoms of flu versus a common cold. Those symptoms, not the test results, should be the trigger to take relevant action – either treatment or protecting others from exposure. Further, a negative test shouldn’t make one complacent in taking steps to prevent spreading the flu. Learn what you can do to keep your family healthy this winter by visiting the “Prevention and Treatment” section on the Centers for Disease Control and Prevention H1N1 website.

(Jerod M. Loeb, PhD, is Executive Vice President, Division of Quality Measurement and Research, The Joint Commission, and a member of the Water Quality & Health Council).

Posted in Flu, H1N1, Symptoms | No Comments »

Is it the flu or the common cold?

Saturday, November 7th, 2009

Viruses are unwelcomed visitors in many households right now. I am frequently asked how to tell whether a family member is suffering from the flu or just a common cold. Some of the symptoms are similar, but others generally indicate one or the other of these illnesses. To help you evaluate your symptoms, I’ve created this comparison chart.

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