Virus influenza A

**Influenzavirus A** ialah sejenis virus dalam keluarga virus Orthomyxovirida dan satu-satunya spesis virus dalam genus *Alphainfluenzavirus*. Influenzavirus A mempunyai hanya satu spesies: *Virus influenza A* yang menyebabkan influenza di kalangan burung dan sesetengah mamalia. Semua subjenis virus influenza A telahpun diasingkan daripada burung-burung liar, walaupun penyakit bukan perkara biasa. Sesetengah asingan virus influenza A menyebabkan penyakit teruk di kalangan kedua-dua ternakan bela jinak dan jarang sekali manusia. Kadangkala virus tersebar daripada burung akuatik liar ke ternakan bela jinak dan ini mungkin menyebabkan dan mencetuskan pandemik influenza manusia.

Virus influenza A merupakan virus RNA bersegmen, bebenang tunggal, deria negatif. Terdapat beberapa subjenis, dilabel mengikut nombor H (untuk jenis hemagglutinin) dan nombor N (untuk jenis neuraminidase). Terdapat 16 antigen H berbeza (H1 hingga H16) dan 9 antigen N berbeza (N1 hingga N9). Jenis terbaru H (H16) diasingkan daripada Burung Camar Topeng Hitam yang ditangkap di Sweden an Belanda pada 1999 dan dilaporkan dalam kesusatseraan pada 2005.

Setiap subjenis virus memutat kepada pelbagai strain dengan profil patogenik berbeza; sesetengah patogenik kepada satu spesies tetapi tidak yang lain, sesetengah patogenik kepada pelbagai spesies.

## Lihat juga
* Virologi haiwan
* ACAM-FLU-A

## Catatan

## Bacaan lanjut
;Punca rasmi

*Avian influenza and Influenza Pandemics from the Centers for Disease Control and Prevention
*Avian influenza FAQ from the World Health Organization
*Avian influenza information from the Food and Agriculture Organization
*U.S. Government's avian influenza information website
*European Centre for Disease Prevention and Control  (ECDC) Stockholm, Sweden

;Maklumat umum

*"The Bird Flu and You" Full-color poster provided by the Center for Technology and National Security Policy at the National Defense University, in collaboration with the National Security Health Policy Center
*Influenza Report 2006 Online book. Research level quality information. Highly recommended.
*Special issue on avian flu from *[[Nature (journal)|Nature]]*
*Nature Reports: Homepage: Avian Flu
*
*Pandemic Influenza: Domestic Preparedness Efforts Congressional Research Service Report on Pandemic Preparedness.
*A guide to bird flu and its symptoms from BBC Health
*A Variety of Avian Flu Images and Pictures
*Avian flu, bioterror, animals (page in an online book) "Highly pathogenic avian influenza virus is on every top ten list available for potential agricultural bioweapon agents"
*'The Threat of Bird Flu': HealthPolitics.com 
*Is a Global Flu Pandemic Imminent? from *Infection Control Today*.
*Bird Flu is a Real Pandemic Threat to Humans by Leonard Crane, author of Ninth Day of Creation.
*Links to Bird Flu pictures (Hardin MD/Univ of Iowa)
*Flu Wiki
*
*

;Berita
*Current status (Google news of avian OR bird flu OR influenza)
*Flu Breaking News Avian flu, common symptom, influenza vaccine and flu shot and latest news
*Global Pandemic News : 24×7 online news feeds on the threat of Bird Flu and a Global Pandemic

## Pautan luar
*BioHealthBase Bioinformatics Resource Center Database of influenza genomic sequences and related information
* '''Viralzone''': Influenzavirus A