HYDROPXRICAru)II'M SYI{DROME (ANGARA DISEASE) IN ...

Tlblc Ml,4 indic.t6 lhd lhc pdort?c i$bt€ wh.n inMlded rc bkds ofgroups I ro 5 in
lhc fom oa r uccim, pbtdsd pokqiw tcvds up ro 90 pq 6r {!ie. t4t. l) whd etuat d
ihmugh virule lirus chattq8e (isotdrca A,E) Thce re$hs *cr atb @nfmed by rh.
pqqi.g. of birds poeriv. td p@ipilding ,nibodie in aa& gel p€ipirarion 16l (AcpT) ln
n sariw onrol g@p. 30 per dr of birds !Mv.d rh€ virul.nr vitus chsltqsc which miBtn b.
due io ag. rclared r4ist'E s no bird Ms posiriE tor pEipitdins Dribodi. in AcpT. Th.s
dndinss.€ in ag@Mr virh th. findin$ of Khrw.ja r/ a./ (1989), Mune s/ a/ (t989) ed
AEal ud Ahnud 0 9eo)
Th..xisrenc. oaisol.r6 ofsam. AAV mryp. wnh m,rk.d ditr r.ncca in virut.n@
hds b.en repon.d in ce ofinctulioo body hepaiti, (winr.,n.td, t9s4) Thh s.m, rtoe ir
c.eof ibldion md.n .crqiurion of ms vjrus srftiN df Mv. Apan Lor palis|m, ov.r
rhc p.sl 3 yea6 rhe irciddce ofHps har ats 6@ rcpon.d rom rraq ((Abdut Aziz and At-
Anar, r99r), Nonh hd s@ln Amn6 (Coven, 1992) Mdto (Va[c s/ a/., t995), Kuwrii
{Cow6 c/ 4/ , 1996), a.d Indn (Sh6,q 1996). Allhough HpSv v|qroc is b.ing eguhdy ured
in bioil.rs in palisrn, sri rh@ d. nctd r+ons ofv!@inc hrrur€ ..d discss. reo.@roce !l
3'4 weeks pos-vacci.ari.o rt was obsep.d rh.i lh. i$t.res arom dtfoeni ouihE0ks hld
shr{r ,, ',rr 8rdMb, 0id vituten@ clE.rctcristics Howev.r, nDor ditraeoce, in lheir
pdtuSorc(y wer€ obsvld Th€ qos proldioo srudie in
n ns p.rho'nomonc prop.,r*, lr" "-,,,,,.,", "r",.;;::
:;i :fi:il:l";::
TIEclDnge inHps disdFpdtern ma, be duero th. adapr.br(y oftheorigin l AAv isolar.
,r cbrckens Nter conlinued pqrs86 in rhe popot.tion.
One of ih. l@.r of $. psisr.n@ of H?S coutd b. th. absence of mar.rnal
ionu.ny in broih*, ,! br*dos {E nor vlccinrt€d .giin$ HpS ih prkisrln lr is Diopos.d
hat ! resotar oit.based vacci.e tuy b. admi,isl.Ed ro b,e.der flocks b protd clicks fom
qrlt qpoec ro HlS Thc u@inalion !r 2-3 wk! wix herp ii mnro ins rhc HIS
ourbreaks in bD',es ar larer i8.
AhhouSh. no signin@nt changd w.re lDparenl in th. prot€iD p.oiit. oa rhe @
imlat.s, il nry be rcnh al.mptjrg ro sludy DNA 6Dser pnnrng ot dr.se iehi6 io
d.r€din. ary chi.ge al notecut.. tcv.l