Influenza Virus Mashup

Influenza Virus Mashup

Archive for August, 2010

[Avian Flu Diary] August Tropical Climatology

Posted by Automator On August - 1 - 2010

(Sun, 01 Aug 2010 12:11:00 +0000)

 

# 4776

 

 

Despite predictions of an above-average Atlantic Hurricane season at the start of the 2010 season, the first two months have been decidedly average. 

 

That, however, doesn’t really tell us what the rest of the season may portend.  While predictions are difficult, the ingredients are still in place to see an active year.

 

It wasn’t until mid August of 1992 when the first hurricane of that season appeared - the truly unforgettable CAT 5 Andrew that devastated Homestead, Florida.

 

June and July are often pretty quiet months for tropical activity, with the season really ramping up from mid-August to mid-October.

 

image

 

 

Compare the areas of origin and typical hurricane tracks in these two maps showing July and August, and you will see a considerable amount of difference.

 

July Hurricane Climatology

 

 

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As the summer progresses the spawning grounds for Hurricanes moves further east into the warming Atlantic ocean.  It isn’t until August and September that the Cape Verde basin begins to produce what often turn into very large and persistent hurricanes.

 

You can find much more on Hurricane Climatology at NOAA’s  Tropical Cyclone Climatology page.

 

While it may never develop, or if it does, it may never affect land, right now the National Hurricane Center is watching an area of suspicion the the far Atlantic that they give a 60% chance of developing into a Tropical Cyclone.

 

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(Note: Contents of graphic link will change over time)

 

Although not a threat to land right now, a week or ten days from now may prove a different story.

 

And lest you believe that Hurricanes are just a Florida and Gulf Coast problem, in my essay The Crossroads Of The Atlantic Storm Season  I pointed out:

 

 

There have been cycles within cycles, years where storms have tended to track north along the eastern seaboard instead of south and into the Gulf of Mexico.

 

New York City, and much of New England, is considered `overdue’ for a major hurricane.

 

Here is a look at hurricanes that came within 100 miles of Boston, MA over the past 80 years.

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May was National Hurricane Preparedness week, and during that month this blog devoted considerable time to the subject.  A few of my blogs on the subject included:

 

A Hurricane Reality Check
National Hurricane Preparedness Week: Day 6
NOAA 2010 Atlantic Hurricane Outlook
The Worst That Could Happen
Hurricanes and Inland Flooding
Why I’ll Be Gone With The Wind
Storm Surge Monday
The Crossroads Of The Atlantic Storm Season
You Don’t Have To Live On The Coast

 

Some essential hurricane resources to get you started include:

 

http://www.fema.gov/hazard/hurricane/index.shtm

http://www.ready.gov/america/beinformed/hurricanes.html

 

You may also wish to revisit my blog entitled Hurricane Resources On The Net for links to storm resources online.

[Avian Flu Diary] Florida Records 4th EEE Death In July

Posted by Automator On August - 1 - 2010

(Sun, 01 Aug 2010 11:06:00 +0000)

 

 

# 4774

 

 

Over the past decade there have been an average of about 7 cases (not deaths) of `Triple E’ (Eastern Equine Encephalitis) in the United States each year (range range: 3—21), which makes EEE an exceedingly rare disease in humans.

 

What makes EEE such a concern is that it has a high fatality rate (35%), and among the survivors, a high percentage suffer ongoing neurological problems.

 

Among the mosquito-borne encephalitis viruses, however, it runs a distant third when compared to the number of California serogroup (predominantly La Crosse virus (LACV)) and St. Louis Encephalitis (SLEV) cases.

 

image

MMWR Domestic Arboviral Diseases 1999-2008

 

Given its rarity, it is therefore a bit surprising that Florida has just recorded its fourth EEE death for the month of July (My thanks to the reader who alerted me to this latest victim).

 

 

LCHD ISSUES MOSQUITO-BORNE ILLNESS ADVISORY

LEON COUNTY HEALTH DEPARTMENT ISSUES MOSQUITO-BORNE ILLNESS ADVISORY

–Medical director urges precautions against mosquitoes–

Tallahassee– The Leon County Health Department announces that there has been increased mosquito-borne disease activity in Leon County. “We have had a confirmed human death due to Eastern equine encephalitis (EEE),” said Dr. Marjorie Kirsch, medical director, and,“the risk of transmission of mosquito-borne viruses to humans is increased.” A Leon County horse has also been recently diagnosed with EEE.

 

EEE virus is spread by the bite of an infected mosquito. It isn’t spread person to person. An average of six human cases of EEE are reported each year in the United States.

 

The Leon County Health Department reminds residents and visitors to avoid being bitten by mosquitoes that may cause disease. Leon County Mosquito Control and the Leon County Health Department continue surveillance and prevention efforts and encourage everyone to take basic precautions to help limit exposure. More Info Available

 

This update was submitted at 7/31/2010 6:04:43 PM

 

While obviously a concern, and certainly worthy of public discussion, it is only fair to point out that the odds of contracting EEE from a mosquito in Florida are extremely low. 

 

And while the spotlight right now is focused on Florida, this isn’t just a problem for the sunshine state. 

 

The graphic below shows that while Florida leads the pack that over the years Massachusetts, New Jersey, Georgia, and Louisiana have seen their share of cases as well.

image

 

Given its severity (and the prevalence of other mosquito borne diseases like West Nile, Dengue, SLEV), it makes sense to take steps to protect yourself and your family.

 

Yesterday I wrote about the Aedes Albopictus or `Asian tiger’ mosquito’s willingness to move in, and breed inside your home (see Making Themselves At Home). 

So today would be a good day to go around and look for likely breeding places in, and around your home. This should become a weekly habit – at least during mosquito season.

 

I’ve repeated the Florida Department of Health’s mantra that to help protect themselves against mosquito borne diseases people  should practice the “5 D’s”

Don’t go outdoors at DUSK and DAWN when mosquitoes are most active.

DRESS so your skin is covered with clothing

Apply mosquito repellent containing DEET to bare skin and clothing. 

Other effective repellents include picaridin, oil of lemon eucalyptus, and IR3535

Empty containers and DRAIN standing water around your home where mosquitoes can lay eggs.

Today I’ve got a new resource for you.  

 

An interactive insect repellant search engine developed by the EPA that will that will allow you to input your needs and it will spit out the best repellants to use.

 

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(click image to go to search engine)

 

Since knowledge is power, and prevention is a far better strategy than trying to cure a disease, here are some some of my earlier blogs on EEE:

 

Third Florida EEE Death in July
Eastern Equine Encephalitis (EEE)

 

And here is a list of recent Dengue/Arbovirus posts as well:

 

ASTMH: Dengue and Insect-Borne EIDs In The US
Update On The Florida Dengue Cases
Dengue Reports From The Caribbean
MMWR: Dengue Epidemic In Puerto Rico
MMWR: Dengue Fever In Key West 

[Flu Wiki Forum] News Reports for August 1, 2010

Posted by Automator On August - 1 - 2010

(Sun, 01 Aug 2010 02:38:58 GMT)

Reminder: Please do not post whole articles, just snippets and links, and do not post articles from the Las Vegas Review-Journal. Thanks!!

India

?  Swine flu turns deadlier this year (Link)

General

?  Flu jab linked to seizures in under fives: officials (Link)

Commentary

?  Recombinomics: Alarming H1N1 Case Fatality Rates In India  (Link)



?  H (Link)

News for July 31, 2010 is here.


Thanks to all of the newshounds!
Special thanks to the newshound volunteers who translate international stories - thanks for keeping us all informed!

Other useful links:

CDC A(H1N1) Site

WHO A(H1N1) Site

WHO H5N1 human case totals, last updated July 29, 2010
Charts and Graphs on H5N1 from WHO
Google Flu Trends (U.S.)
CDC Weekly Influenza Summary
Map of seasonal influenza in the U.S.
CIDPC (Canada) Weekly FluWatch
European CDC Influenza News
UK RCGP Weekly Data on Communicable and Respiratory Diseases
Flu Wiki Main Page

[Crof's H5N1] Meet your new neighbour A. albopictus

Posted by Automator On August - 1 - 2010

Mike Coston at Avian Flu Diary has today’s must-read: Making Themselves At Home describes how mosquito species like Aedes albopictus are spreading from their southeast Asian habitats…to places like Italy, Greece, southeast Brazil, and the eastern half of the US.

Companies that produce DEET are likely to see their stock prices soar.