News Scan for Dec 18, 2017

News brief

'America First' strategy outlines measured against biothreats

President Donald Trump today released a new foreign strategy called the "America First" document, outlining his administration's geopolitical goals. In addition to naming Russia and China as America's "rivals," the president dedicates less than 1 page of the 68-page document to the threats posed by biological weapons.

In a section called, "Combat Biothreats and Pandemics," Trump says that early detection, emergency response, and dedication to medical innovation are necessary to fight both biological weapons and natural outbreaks such as SARS (severe acute respiratory syndreom) and Ebola. Supporting innovation through "strengthening the intellectual property" is labeled as a "priority action."

Elsewhere in the strategy, the president names both North Korea and Syria as states where rogue governments have harnessed biological weapons that could bring global destruction if employed. He also cites the use of chemical and bioweapons in the Middle East by the terrorist group ISIS as an example of weapons of mass destruction that must be stopped.
Dec 18 White House strategy

 

Dengvaxia fallout continues with legal probe

Major news agencies reported over the weekend and today that the fallout from Sanofi Pasteur's decision to limit the use of the Dengvaxia vaccine is continuing in the Philippines, where lawmakers are continuing to investigate both the Filipino government and the vaccine's manufacturer, Sanofi Pasteur.

Many are questioning the motive of former president Benigno Aquino III's decision to orchestrate a massive vaccination of school-age children in the spring of 2016. Others are wondering if Sanofi dismissed vital information concerning the vaccine's potential to cause severe dengue infections in dengue-naive recipients.

In a story published in the New York Times, reporters quoted parents who are concerned their children are now more vulnerable to severe dengue infections. They also highlighted the biggest conundrum facing countries licensed to use Dengvaxia: If the vaccine is only supposed to be administered to those who had previously contracted dengue, but there's no rapid test that can be performed to determine that, what are clinicians, parents, and lawmakers supposed to do?

Both the Philippines and Brazil initiated government-sponsored vaccination campaigns in 2016, but so far the Philippines are the only country to begin a legal examination of the vaccine.
Dec 18 Wall Street Journal story
Dec 17 New York Times story

 

Mandatory vaccine education reduces number of exemptions

A study published today in the journal Pediatrics describes the results of a Washington law that mandated counseling before parents were allowed to claim a vaccine exemption for their child. Forty percent less parents sought exemptions after receiving counseling from a health care provider, researchers found.

Washington state implemented senate bill 5005 (SB5005) on July 22, 2011 as a way to address pockets of vaccine hesitancy and exemptions in certain communities. SB5005 required parents to submit a Certificate of Exemption (COE) signed by a Washington-licensed health care provider documenting that they discussed "the benefits and risks of immunizations" with the provider.

To study the impact of the bill, researchers compared kindergarten vaccine data from 1997 to 1998 through 2013 to 2014. Like all other states, Washington requires proof of vaccination or exemption before children begin kindergarten.

After SB5005 was implemented, there was a relative reduction of exemption by 40.2%, and a significant absolute reduction of 2.9 percentage points (95% confidence interval, −4.2% to −1.7%) in the rates of immunization exemptions at the state level.  

"Our findings highlight the importance of evidence-informed legislation to reduce the risk of vaccine preventable diseases," the authors concluded. "States in the United States and jurisdictions in other countries should consider adding parental counseling as a requirement for obtaining exemptions to vaccination requirements."
Dec 18 Pediatr study

 

Study: Probiotics, chewing gum offer no benefit for sore throats

Probiotics and xylitol chewing gum, two over-the-counter antibiotic alternatives used to treat sore throat symptoms, have no significant effect, according to a 4-year randomized controlled trial that took place in the United Kingdom. The team reported their findings today in the latest edition of CMAJ (Canadian Medical Association Journal).

Probiotics and xylitol, a type of birch sugar that prevents bacterial growth, have been shown to prevent recurrence of respiratory infections. Clinicians have eyed them as a possible over-the-counter treatment that might help manage bacterial and viral infections, which could potentially help curb antibiotic use. However, their role in treating pharyngitis has been unclear.

The study included 934 people ages 3 and older from a primary care setting between 2010 and 2014, of which 698 provided complete data. Participants used a symptoms diary to record the number of probiotic capsules and sticks of chewing gum they used each day, along with their sort throat severity symptoms. Researchers considered participants "compliant" if they took 75% of their treatment.

No significant effect was found for probiotics or xylitol gum, and there were no differences between groups for both of the treatments, which investigators said suggests that neither intervention helped control acute symptoms.

"There is no reason for clinicians to advise patients to use either of these treatments for the symptomatic management of pharyngitis," they wrote.
Dec 18 CMAJ abstract
Dec 18 CMAJ press release

Stewardship / Resistance Scan for Dec 18, 2017

News brief

More Candida auris infections recorded in US

According to an updated case count from the Centers for Disease Control and Prevention (CDC), there are now 174 cases of Candida auris infections in the United States, 17 more than the CDC reported last month.

As of Nov 30, the multidrug-resistant (MDR) fungus has been identified in healthcare facilities in 10 states, with New York (110), New Jersey (38), and Illinois (12) all reporting new cases since the last update. Cases have also been reported in California (1), Connecticut (1), Florida (2), Indiana (1), Maryland (2), Massachusetts (6), and Oklahoma (1).

"U.S. C. auris cases are a result of inadvertent introduction into the United States from a patient who recently received healthcare in a country where C. auris has been reported or a result of local spread after such an introduction," the CDC explained.

All cases represent laboratory-confirmed C auris infections, and the CDC said 257 other patients have been colonized with C auris detected through targeted screening in four states with clinical cases.

In patients with compromised immune systems, C auris can cause serious invasive infections affecting the bloodstream, heart, brain, ear, and bones.
Dec 15 CDC update

 

Wendy's to reduce antibiotic use in beef supply

Fast-food chain Wendy's says it will take steps to reduce the use of antibiotics in its beef supply, according to a company press release.

In its annual update on corporate social responsibility initiatives, Wendy's said that starting in 2018, it will source about 15% of its beef from a group of producers that have each committed to a 20% reduction in the amount of the one medically important antibiotic routinely fed to their cattle. According to Reuters, that antibiotic is Tylosin, a broad-spectrum macrolide. The company said it's committed to increasing the amount of beef purchased from these producers.

The company also announced that it has eliminated all medically important antibiotics from chicken production, fulfilling a pledge it made last year, and that it plans to decrease the use of antibiotics in its pork supply.

Wendy's is one of several major fast-food and fast-casual restaurant chains that have committed to removing medically important antibiotics from their poultry supply in recent years, in response to growing consumer demand for antibiotic-free chicken. The movement to reduce the use of medically important antibiotics in the beef and pork supplied to these chains has been slower to develop.

Earlier this month, data released by the US Food and Drug Administration showed that the amount of medically important antibiotics sold for use in livestock and poultry fell by 14% from 2015 to 2016, the first decline since the agency began collecting the data in 2009.
Dec 15 Wendy's press release
Dec 15 Reuters story

 

Study finds high rate of hospital readmission for MDRO-infected patients

A single-center study published yesterday in Infection Control and Hospital Epidemiology found that over a 10-year period, more than 60% of patients with multidrug-resistant organisms (MDROs) were readmitted to the hospital within a year of the initial infection.

The purpose of the retrospective study, conducted at a 1,250-bed academic tertiary referral center in St. Louis, MO, was to determine incidence of and risk factors for readmission with MDROs among patients with previous MDRO infection. Investigators from Washington University School of Medicine identified patients with MDROs obtained from the bloodstream, bronchoalalveolar lavage (BAL)/bronchial wash, or other sterile sites from January 2006 to October 2015. They then evaluated all readmissions less than a year from the index hospitalization for bloodstream, BAL/bronchial wash, or other sterile sites positive for the same or different MDROs.

Of the 4,429 patients with a positive culture for an MDRO, 2,127 (61.6%) were readmitted more than once within a year, and 512 patients (24.1%) had the same or a different MDRO isolated from blood, BAL/bronchial wash, or another sterile site during readmission. Bone marrow transplant, end-stage renal disease, lymphoma, methicillin-resistant Staphylococcus aureus, or carbapenem-resistant Pseudomonas aeruginosa during index hospitalization were factors associated with increased risk of an MDRO isolated during a readmission. MDROs isolated during readmissions were in the same class of MDRO as the index hospitalization 9% to 78% of the time, with variation by index pathogen.
Dec 17 Infect Control Hosp Epidemiol abstract

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