Originally posted by maddale
Yeah but it shouldnt get to bad, i heard that for that to happen someone who already had a cold or some other ilness had to catch it for it to have a
chance to mutate nd one country seems to have got rid of it

Dual infections would be required for H5N1 to aquire the needed polymorphism. It need not get these needed sequences from humans alone.
Here is the list of isolates that have appropriate nucleotide sequence to recombine with H5N1 to make the S227N polymorphism in HA that allows for
efficient H2H transmission:
AY575869 A/Hong Kong/212/03 2003 H5N1
AB212054 A/Hong Kong/213/03 2003 H5N1
ISDN38262 A/Hong Kong/213/2003 2003 H5N1
AY575870 A/Hong Kong/213/2003 2003 H5N1
AY738456 A/ostrich/Eshkol/1436/03 2003 H9N2
DQ104453 A/turkey/Avigdor/1209/03 2003 H9N2
DQ104454 A/turkey/Avigdor/1215/03 2003 H9N2
DQ104458 A/turkey/Brosh/1276/03 2003 H9N2
DQ104455 A/turkey/Kfar Warburg/1224/03 2003 H9N2
DQ104464 A/chicken/Kfar Monash/636/02 2002 H9N2
DQ104450 A/turkey/Avichail/1075/02 2002 H9N2
DQ104473 A/turkey/Beit HaLevi/1009/02 2002 H9N2
DQ104451 A/turkey/Ein Tzurim/1172/02 2002 H9N2
DQ104462 A/turkey/Givat Haim/622/02 2002 H9N2
DQ104471 A/turkey/Givat Haim/868/02 2002 H9N2
AY548507 A/turkey/Givat Haim/965/02 2002 H9N2
AY738452 A/turkey/Givat Haim/965/02 2002 H9
DQ104459 A/turkey/Kfar Vitkin/615/02 2002 H9
AY548510 A/turkey/Kfar Vitkin/615/02 2002 H9N2
DQ104460 A/turkey/Kfar Vitkin/616/02 2002 H9
AY548511 A/turkey/Kfar Vitkin/616/02 2002 H9N2
AY548512 A/turkey/Mishmar Hasharon/619/02 2002 H9N2
DQ104461 A/turkey/Mishmar Hasharon/619/02 2002 H9
DQ104449 A/turkey/Naharia/1013/02 2002 H9N2
DQ104452 A/turkey/Sapir/1199/02 2002 H9N2
DQ104463 A/turkey/Yedidia/625/02 2002 H9
AY548513 A/turkey/Yedidia/625/02 2002 H9N2
DQ104448 A/turkey/Yedidia/911/02 2002 H9N2
AY548514 A/chicken/Tel Adashim/786/01 2001 H9N2
AY738454 A/chicken/Tel Adashim/786/01 2001 H9
DQ104465 A/chicken/Tel Adashim/809/01 2001 H9
AY548515 A/chicken/Tel Adashim/809/01 2001 H9N2
AY548500 A/chicken/Tel Adashim/811/01 2001 H9N2
DQ104467 A/chicken/Tel Adashim/811/01 2001 H9
AY548501 A/chicken/Tel Adashim/812/01 2001 H9N2
DQ104468 A/chicken/Tel Adashim/812/01 2001 H9
DQ104469 A/goose/Tel Adashim/829/01 2001 H9N2
DQ104470 A/goose/Tel Adashim/830/01 2001 H9N2
AY548499 A/turkey/Givat Haim/810/01 2001 H9N2
DQ104466 A/turkey/Givat Haim/810/01 2001 H9
DQ104472 A/chicken/Maale HaHamisha/90658/00 2000 H9N2
AY738451 A/turkey/Neve Ilan/90710/00 2000 H9
AY548502 A/turkey/Neve Ilan/90710/00 2000 H9N2
AF218108 A/Peking Duck/Malaysia/F20/1/98 1998 H9N2
AF218105 A/Peking Duck/Singapore/F91-5/9/97 1997 H9N2
AY206675 A/quail/Hong Kong/A28945/88 1988 H9N2
Notice that most of these are found in the avian population. The wider spread H5N1 gets, the better the chances are for "recombination" to
occure.
Play it safe and read the other threads for preparing yourself.
Couldn't hurt!
[edit on 24-2-2006 by gman55]