Avian Flu H5N1ERIC 吳玟晏 90121347JANE 呂嘉心 90122214

What is the Avian Flu? A contagious disease. (only between birds) Lately, a subtype crossed the species barrier

to infect human. Domestic poultry:

– High pathogenic (fatal, internal organs severely injured, within 48 hours)

– Low pathogenic (mild symptoms like ruffled feathers, a drop in egg production)

Which viruses cause highly pathogenic disease?

Influenza A viruses have 16 H subtypes and 9 N subtypes. (H and N)

H5 and H7 subtypes are known to cause the highly pathogenic form of the disease.

When they can circulate in poultry populations, they can mutate, and grow unto a pathogenic form.

Sources of the Avian Flu Avian Flu is infectious disease of birds

caused by type A strains of the influenza virus. The disease, which was first identified in Italy more than 100 years ago, occur worldwide.

1918 outbreaks in Italy, a Pandemic, the virus was H1N1.

Risks First, if the virus can break the barrier

between birds and human beings, it will cause very severe disease.

Second, if given enough opportunities, it will change into a form that is highly infectious for humans and spreads easily from person to person. Then it will start a global outbreak (a pandemic.)

A Timeline of A.F. 1996 = Highly pathogenic H5N1 virus is

isolated from a farmed goose in Guangdong. 1997 = Human infections with H5N1 reported

in Hong Kong. 2003 ~ = An outbreak in Asia in mid-2003

(some cases are unreported)

A History Chart of A.F.

Cumulative Number of Confirmed Human Cases of Avian Influenza A/(H5N1) Reported to WHO

9 December 2005

Date of onset

Cambodia China Indonesia Thailand Viet Nam Total

cases

deaths

cases

deaths casesdeath

scases

deaths

casesdeath

scases deaths

2003 0 0 0 0 0 0 0 0 3 3 3 3

2004 0 0 0 0 0 0 17 12 29 20 46 32

2005 4 4 5 2 13 8 5 2 61 19 88 35

Total 4 4 5 2 13 8 22 14 93 42 137 70

Total number of cases includes number of deaths.WHO reports only laboratory-confirmed cases.

References 世界衛生組織禽流感專頁

http://www.who.int/csr/disease/avian_influenza/en/

Animal to human

Environment to human Human to human

Transmission

Animal to human Touching diseased birds Handling fighting cocks Playing with poultry Eating undercooked poultry

Environment to human Droppings from poultry, migratory birds, etc. Our situation

Human to human

Rarely reported Possibility in global influenza pandemic

Whether bird flu comes to Taiwan or not

To come or not? Or When it comes? Migratory birds Outbreak of bird flu What we can do?

--Avoid migratory

--Keep hands clean

A Correct Way to Wash Your Hands

Wet your hand

Remember the correct steps in washing your hands?

SoapYour hand

Wash really

well Rinseyour hand

Use paper

towel

Sources of information

Internet website

www.cdc.gov

www.who.int

www.epic.gov.sg

www.info.gov.hk

Bird flu hotline 1922 0800-024-582 177

Take Care !