Showing posts with label Reaction. Show all posts
Showing posts with label Reaction. Show all posts

Branswell: PLoS One Study On Adverse Reactions To MMR Vaccine

 

 

# 6006

 

I was in the process of reading a paper on reactions following the administration of the MMR vaccine that appears this morning in the PloS One  journal (and considering blogging on it), when luckily I saw that Helen Branswell of the Canadian Press has already covered the story.

 

The paper can be read at:

 

Adverse Events following 12 and 18 Month Vaccinations: a Population-Based, Self-Controlled Case Series Analysis

 

Kumanan Wilson, Steven Hawken, Jeffrey C. Kwong, Shelley Deeks, Natasha S. Crowcroft, Carl Van Walraven, Beth K. Potter, Pranesh Chakraborty, Jennifer Keelan, Michael Pluscauskas, Doug Manuel

 

Helen’s article appears this morning on the Global News website, and so I’m going to do the smart thing and quickly step aside and let one of the best science writers in the business explain the findings.

 

 

MMR vaccine reactions fairly common at 12 months, but serious reactions rare

Helen Branswell,  Monday, December 12, 2011 9:28 PM

 

Global News | MMR vaccine reactions fairly common at 12 months, but serious reactions rare

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IAEA Fukushima Briefing: April 10th

 

 


# 5480

 


The IAEA (International Atomic Energy Agency) has just released their latest briefing, giving the status of the damaged reactors at the Fukushima Daiichi facility.

 

I’ve only reproduced the first section of a much longer report, follow the link to read it in its entirety.

 

 

IAEA Briefing on Fukushima Nuclear Accident (10 April 2011, 15:00 UTC)

 

by International Atomic Energy Agency (IAEA) on Sunday, April 10, 2011 at 8:30am

 1. Current Situation

Earthquake of 7th April

External power has been restored at all sites affected by the 7th April earthquake.  The 3 litres of water that were spilled at Onagawa NPP have been cleaned up.

 

Changes to Fukushima Daiichi Plant Status

Overall, the situation at the Fukushima Daiichi plant remains very serious but there are early signs of recovery in some functions such as electrical power and instrumentation.

 

In Units 1, 2 and 3, 60,000 tons of contaminated water need to be removed from the turbine buildings and trenches. This water will be transferred to the condensers of each unit and the Radioactive Waste Treatment facility. In addition, temporary storage tanks have been ordered to provide additional capacity for the water and will be located adjacent to the Radioactive Waste Treatment facility. In Unit 2 water transfer from the condenser to the condensate storage tank was completed on 9th April.

 

Nitrogen gas is being injected into the Unit 1 containment vessel to reduce the possibility of hydrogen combustion within the containment vessel. The pressure in this containment vessel is increasing due to the addition of nitrogen.

 

In Unit 1 fresh water is being continuously injected into the reactor pressure vessel through feed-water line at an indicated flow rate of 6 m3/h using a temporary electric pump with off-site power. In Units 2 and 3 fresh water is being continuously injected through the fire extinguisher lines at indicated rates of 7 m3/h and 7 m3/h respectively using temporary electric pumps with off-site power.

 

In Unit 1 the pressure in the RPV is increasing as indicated on both channels of instrumentation. NISA has indicated that some instruments in the reactor vessel may not be working properly. In Units 2 and 3 Reactor Pressure Vessel and Drywell pressures remain at atmospheric pressure.

 

RPV temperatures remain above cold shutdown conditions, typically less than 95°C.  In Unit 1 temperature at the feed water nozzle of the RPV is 235°C and at the bottom of the RPV is 120°C. In Unit 2 the temperature at the feed water nozzle of the RPV is 145°C. The temperature at the bottom of the RPV was not reported. In Unit 3 the temperature at the feed water nozzle of the RPV is 97°C and at the bottom of the RPV is 109°C.

 

The concrete pump vehicle sprayed fresh water (90 T) to the spent fuel pool in Unit 4 on 9th April.

There has been no change in status in Units 4,  5 and 6 and the Common Spent Fuel Storage Facility

(Continue . . . )

 

 

You can also view the SUMMARY OF REACTOR STATUS report HERE.

 

image

(Click to view)

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Pandemics And The `Worried Well’

 

 

 

# 4546

 

 

Most people are highly suggestible. 

 

If you don’t believe that, then just let one person in a group start to yawn and see what happens with the others.   


And when the media starts talking ominously about the symptoms of a new, dreaded disease – like pandemic influenza – it isn’t unusual for people to start running through a mental check list several times a day, to see if they (or a child in their care) might be infected.

 

In fact, it is the most natural reaction in the world.

 

Nor is it necessarily a bad thing, since it is important not to expose others if you believe you might be infected.  

 

But if it results in unneeded panicky trips to your already overburdened Emergency Department, it can cause real problems.

 

Back in the 1970′s we used to see a phenomenon called the Marcus Welby Syndrome’.

 

For those that don’t remember, the 1970′s was a time when medical TV shows filled the airwaves. Medical Center, Emergency, and Marcus Welby, to name a few.

 

So strong was the power of suggestion that each week, we’d see patients come into the ER convinced they had whatever the `disease of the week’ on Marcus Welby was. 

Even when it was something rare – like Hansen’s Disease (Leprosy).

 

Frankly, the last place I would want to go during a pandemic outbreak is my local emergency room.  If I wasn’t infected when I got there, I’d have a pretty good shot of being exposed while I waited.

 

Of course, if its a true emergency, you do what you have to do. 

 

And in fact, I ended up in my local emergency room over Memorial Day weekend last year for a non-flu related medical emergency.

 

The problem comes when people who are either not sick, or who are only mildly ill and could easily care for themselves or their children at home, show up and clog emergency rooms.   

 

The so-called, `worried well’. 

 

And according to a presentation made at this week’s Paediatric Academic Societies (PAS) annual meeting in Vancouver, British Columbia, Canada – that’s exactly what happened in the lead up to the pandemic of 2009. 

 

Even before the flu had arrived in their community, worried parents were taking their kids to hospital emergency rooms in increasing numbers.

 

Here is the press release, followed by a link to the Abstract.

 

 

American Academy of Pediatrics

Fear of pandemic influenza clogs EDs even when disease is not present

Author of new study calls for responsible media coverage of public health emergencies

VANCOUVER, BRITISH COLUMBIA – A study of emergency department (ED) activity before and during the H1N1 influenza pandemic highlights the role public fear can play in unnecessarily straining medical facilities and will aid in ongoing preparations for public health emergencies, according to the authors.

 

When EDs experience surges in patient volumes and become overcrowded during a pandemic, the quality and timeliness of medical care suffers, noted William M. McDonnell, MD, JD, who will present study findings Tuesday, May 4 at the Pediatric Academic Societies (PAS) annual meeting in Vancouver, British Columbia, Canada.

 

To determine how public fear over H1N1 influenza and presence of the disease in the community affected use of a pediatric ED, Dr. McDonnell and his colleagues compared usage rates during three one-week periods. Fear week was a period of heightened public concern before the disease was present in the community. Flu week was a period of active pandemic disease. Control week was a period prior to the onset of concern.

 

Results showed that parents brought their children to the ED in increased numbers during fear week. Compared to the control week, the number of patients was up by 16.3 percent, and children ages 1-4 years comprised 54 percent of the increase.

 

When H1N1 later arrived in the community (flu week), the ED saw a second surge in patient volumes. The number of patients increased 22.4 percent compared to the control week, and children ages 5-18 years accounted for 91.7 percent of the increase.

 

"Our study shows that public fear of disease, even when actual disease is not present, can bring about the problems of emergency department overcrowding," said Dr. McDonnell, assistant professor of pediatrics in the Division of Pediatric Emergency Medicine and adjunct professor of law at S.J. Quinney College of Law, University of Utah. "As we continue developing our public health emergency planning programs, we must ensure that responsible news media coverage of public health issues provides the benefits of a free and vigorous press, without unnecessarily harming the public health."

 

 

You can read the abstract Here and you can follow news of the PAS meeting on Twitter at http://twitter.com/PedAcadSoc

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