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BOCA FIRE RESCUE NET - City of Boca Raton

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Page 6<br />

<strong>BOCA</strong> <strong>FIRE</strong> <strong>RESCUE</strong><br />

EMS<br />

By: Bob Nelligan<br />

Division Chief<br />

Where has the Avian Flu gone?<br />

The stimulus for this update<br />

was my recent attendance at<br />

the International Disaster<br />

Management Conference in<br />

Orlando on February 20-22.<br />

While there, I met and discussed this<br />

topic with Danitza Tomianovic <strong>of</strong> the<br />

Miami Quarantine Station for the CDC.<br />

Assessment <strong>of</strong> the current situation<br />

from the CDC<br />

The highly pathogenic avian influenza<br />

A (H5N1) in Asia, Europe, the Near<br />

East, and Africa is not expected to diminish<br />

significantly in the short term. It<br />

is likely that H5N1 virus infections<br />

among domestic poultry have become<br />

endemic in certain areas and that sporadic<br />

human infections resulting from<br />

direct contact with infected poultry and/<br />

or wild birds will continue to occur. So<br />

far, the spread <strong>of</strong> H5N1 virus from person-to-person<br />

has been very rare, limited<br />

and unsustainable. However, it<br />

continues to pose an important public<br />

health threat.<br />

Map: Affected areas with confirmed human<br />

cases since 2003<br />

The World Health Organization (WHO)<br />

has reported human cases <strong>of</strong> H5N1 in<br />

Asia, Africa, the Pacific, Europe and the<br />

Near East. Indonesia and Vietnam have<br />

reported the highest number <strong>of</strong> H5N1<br />

cases to date. Overall mortality in reported<br />

H5N1 cases is approximately<br />

60%. The majority <strong>of</strong> cases have occurred<br />

among children and adults aged<br />

less than 40 years old. Mortality was<br />

highest in cases aged 10-19 years old.<br />

Studies have documented the most significant<br />

risk factors for human H5N1<br />

infection to be direct contact with sick<br />

or dead poultry or wild birds or visiting<br />

a live poultry market. Most human<br />

H5N1 cases have been hospitalized late<br />

in their illness with severe respiratory<br />

disease. The current cumulative number<br />

<strong>of</strong> confirmed human cases <strong>of</strong> H5N1 is<br />

408; 255 <strong>of</strong> which have died. Despite<br />

the high mortality, human cases <strong>of</strong><br />

H5N1 remain rare to date. There is little<br />

pre-existing natural immunity to H5N1<br />

virus infection in the human population.<br />

If H5N1 viruses gain the ability for efficient<br />

and sustained transmission among<br />

humans, an influenza pandemic could<br />

result with potentially high rates <strong>of</strong> illness<br />

and death worldwide.<br />

Now that I have<br />

your attention!<br />

Some Facts:<br />

• Although low pathogenic avian<br />

influenza (H5N2) has been reported<br />

on very rare occasions in humans in<br />

the United States, the highly pathogenic<br />

avian influenza A viruses have<br />

never been detected among wild<br />

birds, domestic poultry, or people in<br />

the U.S.<br />

• You cannot get avian influenza<br />

from properly handled and cooked<br />

poultry and eggs.<br />

• Studies done in labs suggest that<br />

prescription medicines approved for<br />

human influenza viruses should work<br />

in treating avian influenza infection<br />

in humans; however, influenza viruses<br />

can become resistant to these<br />

drugs so these drugs may not always<br />

work.<br />

Is there a vaccine available to protect<br />

humans from the H5N1 virus?<br />

Yes. The H5N1 vaccine, approved in<br />

April 2007 by the FDA, was developed<br />

as a safeguard against the possible<br />

emergence <strong>of</strong> an H5N1 pandemic virus.<br />

However, the H5N1 virus is not a pandemic<br />

virus (yet!) because it does not<br />

transmit efficiently from person to person,<br />

so the vaccine is being held in the<br />

U.S. Strategic National Stockpile rather<br />

than being used by the general public.<br />

Summary<br />

The World Health Organization, in cooperation<br />

with countries all around the<br />

world, is keeping a watchful eye on this<br />

potential pandemic virus. Human cases<br />

are being monitored and treated aggressively.<br />

New cases among humans were<br />

down by 50% in 2008 from the previous<br />

year. Domestic and wild birds are<br />

being tested for H5N1 infection on a<br />

broad scale around the world in an effort<br />

to keep it in check. In the United<br />

States, the CDC and USDA have<br />

banned the importation <strong>of</strong> birds from<br />

areas where H5N1 has been documented.<br />

The federal regulation states<br />

that no person may import or attempt to<br />

import any birds, whether dead or alive,<br />

or any products derived from birds<br />

from the specified countries. For further<br />

and continuous updated information on<br />

the Avian Influenza, go to the web sites<br />

<strong>of</strong> the World Health Organization<br />

http://www.who.int/csr/disease/<br />

avian_influenza/en/index.html and the<br />

Center for Disease Control http://<br />

www.cdc.gov/flu/avian/index.htm.<br />

Not to be outdone by Emily, Clay Fredrick<br />

brought his mom, Shannon, in for a visit.

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