Giám sát sự lưu hành của virus cúm a h5n1 ở gia cầm tại 4 chợ đầu mối trên địa bàn thành phố hà nội

KHOA HOC
KY
THUAT THO
Y TAP XXI SO 1 -
2014
GIAM
SAT
suf LlfU HANH
CUA
VIRUS
CUM
A/H5N1 0
GIA CAM
TAI
4
CHU OAU
MOi
THEN DjA
BAN
THANH PHO
HA NOI
Nguyen Huy Ddng
Sa Nong nghiep va
PTNTHd
Noi
TOM TAT
Ket qua dieu tra hien trang budn ban gia cdm va gidm sat su
luu
hdnh cua virus cum
A/H5N1
tai

4 chp ddu mdi tren dia bdn thdnh ph6 Ha
Npi
cho thdy:
- Trong s6 4 chp ndi tren, chp Ha Vy Id chp budn ban gia cdm Idn nhdt va ty le gia cdm ngoai tinh
dua ve cung nhieu nhdt so vdi 3 cho cdn lai (chp
Bde
Thdng Long, chp San, chp Chiic Son). Cdng
tdc kiem dich va kiem sodt gilt mo da dupc cdc ca quan chiic ndng
chii
y qudn ly chat che d nhimg
chp nay.
-
O
ca 4 chp ty Ie
luu
hanh virus
ciim
A trung binh d
miic
11,28%,
trong do ty le
liru
hdnh
ciia
virus
ciimA/H5Nl
Id 2,54%. Diln
bien sir luu
hanh cua virus
ciimAndi

chung la dn
dinh
qua
nhifiu
nam,
ty
1§
luu hanh cao
hem
thudng xuat hien tir thang 12 nam trudc den thdng 5 nam sau.
- Su luu hdnh cua virus
ciim
A/H5N1
tai 4 chp la
1,11
%
(nam 2009);
0,31
(nam
2012)
va
0,17%
(trong 6 thang ddu nam
2013),
cd mdi lien quan chat che den ngudn g6c gia cam ngoai tinh, ty le tiem
phdng vd ty le bao hp ciia gia cam sau tiem phdng.
- Su luu hanh cua virus
ciim
A/H5NI
tai 4 chp tap trung vdo cdc thdng 1- 5 trong nam, day id thdi

diem luu thdng,
ti8u
thu gia cam nhieu nhdt (trudc va sau
tit NguySn
dan) vd Id giao thdi
ciia
dpt tiem
phong vacxin cum A/H5NI dot
1
trong nam.
Tir
khoa
•
Virus cum
A/H5NI,
Su luu hdnh, Ty le tiem phdng, Ty le bdo hp.
Surveillance on prevalence of
A/H5N1
virus in poultry
at 4 wholesale markets in Hanoi city
Nguyen Huy
Dang
SUMMARY
The result of survey on situation of poultry trade and surveillance on prevalence of A/H5N1
virus at 4 wholesale markets in Ha Noi city indicated that:
Out of 4 above mentioned markets, Ha Vy market was the largest poultry wholesale market
and the rate of poultry at this market coming from the outside of Ha
Noi
city was also highest
compared to the rest markets (North Thang Long market, San market and Chuc Son market).

Close management on disease Inspection and slaughter control works was paid by the
competent authorities at these markets.
In all of 4 markets, the average prevalence rate of A influenza virus was
11.28%.
Of which,
the prevalent rale of A/H5N1 virus was 2.54%. In general, the development of A influenza virus
prevalence was stable
in
the last many years. The highest prevalent rate was usually occurred
in duration from December to May of the next year.
The prevalence of A/H5N1 virus at 4 markets was 1.11% (in 2009), 0.31% (in 2012) and
0.17% (in the first 6 months, 2013) having close relation with the origin of poultry coming from,
vaccinated and protective rate after vaccination.
KHOA
HOC KY
THUAT
THO
Y
TAP
XXI SO 1 -2014
The prevalence of A/H5N1virus at 4 markets concentrated from January to May, that is time
for the highest transportation and consumption of poultry (before and after Tet holidays) and the
transition time for the first
A/H5N1
vaccination in the year.
/keywords:
A/H5N1
virus.
Prevalence, Vaccinated
rate.

Protective rate.
LDATVANDE
Chan nudi gia cam giii mdt vai trd quan trpng
trong nganh ndng nghiep
Viet
Nam. Nhiing nam
gdn ddy, chdn nudi
Id
mpt trong nhung nganh
cd budc phdt triln manh, ngdy cang chiem vi tri
quan trpng trong su chuyin dich ca cdu kinh tl,
xod ddi giam ngheo va
1dm
gidu trong ndng th6n.
Tuy nhien nganh chan nuoi da gap phdi
khdng it kho khan. Trong do dich benh la mpt
trong nhiing trd ngai ldn nhdt, dac biet benh
ciim
gia cdm. Benh
ciim
gia cam chung ddc
lire
cao
(HPAI)
Id mpt benh truyen nhiem nguy
hiem, co
toe
dp Idy lan rdt nhanh vai ty Ie gdy
chet cao trong dan gia cdm nhilm, gay thiet hai
nghiem trpng den nen kinh te va siic khoe ciia

con ngudi.
Thdnh ph6 Ha Npi co nhu cdu tieu dimg thuc
phdm cd nguon gdc
tir
dpng vat rdt ldn,
tnmg
binh
600 - 700 tdn / ngay, trong do ty le thit gia cdm
chiem 30
%,
trong khi thdnh phd mdi tu cung cap
dupc 60%, cdn lai nhap tir cdc tinh khac hoac
nhap khdu; gilt md gia cdm chu yeu nhd le trong
khu ddn cu, viec kilm sodt giet md - ve sinh
thii
y cdn nhieu han che. Viec budn bdn,
gifit
md gia
cdm khdng ro ngudn gdc, gia cdm nhap ldu vdn
tai dien thudng xuyen. Ddy la mdt trong nhiing
nguy8n
nhdn lam
Idy
lan dich
bSnh.
Trudc tinh
hinh
tren, lam the nao dl co
thi
chu ddng biet dupc nai dang luu hanh dich, ty

Ie
luu
hdnh va nai dd dang luu hanh chimg gay
benh nao, ddng thdi phdt hien cdc chiing mdi
mpt cdch chinh xdc nhdt. Vi vay md chiing tdi
tien hanh thuc hien de tdi: "Gidm sat su luu
hdnh
ciia
virus
ciim
A/H5N1 d gia cdm tai 4 chp
ddu mdi
tr8n
dia ban thanh phd Ha Ndi", vdi
muc dich lam can
cii
cho ca quan qudn ly dua ra
dupc cac gidi phdp
chii
ddng phdng chdng dich
cd hieu qua.
N.
NQI
DUNG,
VAT
LIEU VA
PHU'ONGPHAP
2.1.
Npi dung nghien
cuii

- Hien trang budn bdn gia cam d mpt s6
cha ddu m6i tren dia ban thdnh ph6 Ha Npi
(chp gia cdm Hd Vy - H.Thudng
Tin;
chp
Bde
Thdng Long - H. D6ng Anh; chp Chiic Son - H.
Chuong
MJ;
chp Sdn - H. Thach Thdt).
- Gidm sat su luu hanh cua virus
ciim
A/
H5N1
tren dan gia cdm tai 4 chp.
2.2.
Vat lieu va phuvng phap
nghi€n cihi
2.2.1.
Vat lieu
- Mdu swab gia cdm Idy tir 4 chp ddu
moi
buon bdn gia cdm.
- Bp
Idt
phdt hien
ciim
A/H5N1
2.2.2.
Phuffngphdp

nghien cau
- Phuang phap dieu tra h6i
ciiu
vd dieu tra
thuc dia d mdt sd chp ddu mdi tren dia ban
thanh pho Hd Npi.
- Phuong phap lay mlu: Diing tam
b6ng Idy
mdu swab tai 4 chp: chp Hd Vy
Idy
60 mdu
gpp/
thdng; 3 chp cdn lai 12 mdu
gpp/thdng.
Tong
cdng 96 mdu swab gdp/thang.
- Phucmg phdp Real-time RT-PCR xac dinh
sir lim
hdnh cua virus cum
A/H5N1.
III.
KET QUA NGHIEN
CUtJ
VA
THAO LUAN
3.1.
Hien trang budn bdn gia cam
t^i
4
chgr

dau
m^i
Bdn chp ddu mdi budn bdn gia cam deu
nSm
tren cdc
true
giao th6ng, d6ng thdi Id
tryc
buon
bdn gia cdm chinh d Hd Npi.
KHOA HQC
KY
THUAT THU
Y TAP XXI S6 1
- 2014
Chp gia cam Hd
Vy:
Chp gia cdm Ha Vy la
chp gia cdm ddu mdi ldn nhdt Ddng Nam A vdi
156 gian kiot tren
dien
tich 1,62 ha. Trong do,
da s6 hp chi bu6n ban mpt loai gia cdm la ga
(81/156
hp) hodc vit (48/156 hp).
C6ng tdc kiem djch, kiem sodt gilt md va
kiem tra ve sinh
thii
y ciing da dupc thuc hien
nghiem

tiic.
Trudc cdng chp cd chdt kilm dich
lien nganh gom 3 luc lupng:
Thii
y - Cong an
- Quan ly thi trudng,
true
24/24 gid. Chdt cd
nhiem vu kiem dich kilm tra nguon g6c gia cdm,
khir triing tieu ddc phuang tien van chuyin,
xu Iy gia cam khdng ro ngudn g6c va gia cdm
khdng cd gidy chiing nhdn kiem dich, kiem soat
giet md tai 20 hd giet md gia cam trong chp (cdn
bd
thii
y kiem tra va ddng ddu vao thdn thit gia
cdm giet md).
Chp Bac Thang Long cd dien tich 30.000
m-,
trong do dien dch
sii
dung la 12.000
m^
s6 hp
kinh doanh gia cam sdng
la
40 hp; s6 hp kinh
doanh gia cdm da gilt md la 20 hd. Gia cdm dua
vao chp cd ngudn g6c chu yeu Id tu huyen D6ng
Anh va Soc San cua thanh ph6 Hd Npi va tir cdc

tinh Thdi Nguyen, Vmh Phuc,
Bde
Giang. Gia
cdm bu6n bdn tai chp cung dupc kiem tra bdi
can bd
ciia
Tram
thii
y.
Chp Thi trdn Chiic San vd chp San la nhung
chp hoat ddng mang tinh chat cung
edp
hdng
hda cho ngudi dan dia phuang
la
chinh. Cha
hoat dpng theo phien, khu vuc bu6n ban
gia
cam
chua dupc quy hoach
each
ly
vdi
cac khu vuc
khdc.
Gia cam budn ban tai chp phan Idn do cac
hp chan
nudi
tren dia bdn huyen cung cap.
Gia

cdm budn ban tai chp ciing dupc kiem tra
bdi
cdn bd ciia Tram
thii
y.
Tinh hinh budn ban gia cam d 4 chp ddu m6i
dupc th6ng ke d bang
1
va bang 2.
Bang 1. So
lu'o'ng
gia cam buon ban moi ngay tai 4
chp'
dau moi
Nam
2008
2009
2010
2011
2012
Tong
Ch? H^
Vy
65.000
76.000
81.000
15.000
17.000
254.000
Bac Thang Long

2.500
2.500
2.500
3.000
3.200
13.700
Chp*
San
500
500
600
600
650
2.850
Ch<?'
Chuc
Sen
400
450
500
500
500
2.350
Tbinh
17.100
19.863
21.150
4.775
5 338
68.225

Bang 2. Nguon
goe
gia cam ban
tgi
4 cha dau moi
Nguon
Ngi tinh
Ngogi
tinh
Chy H4 Vf
Con
152.400
101.600
%
60
40
Bac Thang Long
Con
10.960
2.740
%
80
20
Chp-
San
Con
2.565
285
%
90

10
Cho Chuc Son
Con
2232
118
%
90
5
Tbinh
Con
55.433
12.792
%
81.25
18.75
Thdng ke tinh hinh budn bdn gia cdm tai 4
chp ddu mdi cho thay, hang ngdy cd 13.645 (sd
trung binh qua 5 ndm d bdng 1) gia cam luu
thdng tai 4 chp ddu mdi, trong do cd
81,25%
ga
cd ngudn gdc
tgi
Ha Npi vd
18,75%
cd ngudn
gdc ngoai tinh. Ddc
bi?t
chp Ha Vy cd s6 luang
gia cdm bu6n ban mdi ngay rat Idn, cao diem

nam
2011
len tdi
81.000
con/ ngdy, ddng thdi
gia
cam tir ngoai
tinh
dua ve chp chiem den
40%
(trong sd do khdng loai
trir
cd ca gia cam tir
bien
gidi).
Vi vay, nguy ca
gia
cam mang mdm
benh la rdt cao.
KHOA
HQC
K?
THUAT
THtJ Y
TJP
XXI
S6
1
- 2014
3.2.

Kit
qud gidm sdt virus cum
A/H5N1
tai
4
ch? aiu m6i nSm
2009-2013
Dupc
su
hd trp
ciia Dg
an
VAHIP
-
Bp
Ndng
D^ep
va
Phat triln Ndng thon, chiing
toi da
giam
sat
virus
cum gia cam
thudng xuyen tren
dia ban thdnh pbd
Ha
Npi tii nam 2009
din
nay.

Hang thdng, can bp thu
y
thuc
bi$n vi?c Idy mdu
giam
sat tai moi chp mdt
ldn.
Kit
qud gidm sdt
giai doan 2009
-
2013 duac trinh
bay d
bang
3
va hinh
1.
Bang
3. Ket qua
giam
sat
virus
cum
A/H5N1
4 cho' dau moi
Nam
2009
2010
2011
2012

2013
T6ng
S6 miu XN
(swab
g$p)
m
450
1056
96
960
576
3138
Dipomg
tinh
cum
A
(gene
M)
(nl)*
16
141
10
123
65
355
Tyl^%
3,56
13,35
10,42
12,81

11,28
11,31
Dvong
tinh
HS (gene
HS)
CD*
5
0
0
3
1
9
7y;e%
1,11
0,00
0,00
0,31
0,17
0,29
Ty le HS/A
(n2/n1)
%
31,25
0,00
0,00
2,44
1,54
2.54
Ghi chu

Djch*
Thang
2
Binth^ng
6
Ty ie
(%
Nam 2009
2010 2011 2012 2013
Hinh
1.
Dien bi4n liru
hinh virus
ciim
A/H5N1
tai
4
chgt
(2009-2013)
KHOA HQC
KY THUAT THO Y
TAP
XXI S6
1-2014
Ket qua d bang tren cho thdy: Trong tdng sd
3138 mau xet nghiem giai doan 2009 - 2013,
cd 345 mlu duong tinh vdi virus
ciim
A (duang
ti'nh vdi gen M), chilm ty le

11,31%.
Trong dd
CO
9 mdu duong tinh vdi cd gen H5 (theo th6ng
bao ciia Cue
thii
y vd
Vien thii
y, cdc mdu duong
tinh H5 d gia cam den thdi diem nay
diu
la
H5N1), chilm ty le 2,54%.
Qua gidm sdt dinh ky 5 nam (ngoai trii ndm
2011
chi 1dm 1 thang) co 355 mdu duong tinh
trong sd 3138 mdu xet nghiem, chilm
11,31%
vdi gen M (phdt hien virus cum A bdt ky type
nao),
ty
1^
duang tinh virus
ciim
A giao dpng
tir
11,28 din 13,35 %
cho cdc nam
tir 2010 din
2013,

chiing td
sir
luu hanh cua virus cum A d
chp gia cdm sdng la phd bien
{ll,31%i).
Tuy
nhien, virus
ciim AyH5Nl
chi chilm 2,54 %
trong s6 cdc virus
ciim
A da dupc phat hien.
Rieng ndm 2009, ty Ie nhilm virus cum A
nay Id thdp nhdt (chi 3,56 % so vdi
11,31%
qua
5 ndm); ly do cd
thi
Id d giai doan ddu trien khai
gidm sdt virus,
vi$c
thu thdp mdu va bao quan
mdu trong qud trinh chuyen ve phdng thi nghiem
chua thuc sy dap
iing
yeu cdu tieu chudn nhu
thudng quy thuc hien vao
nhihig
ndm ke tiep.
Tuy nhien, nam 2009 lai c6 ty

1? dinnig
tinh gen
H5 trong tdng s6 mau duong tinh virus
ciim
A
la cao nhdt
(31,25%).
Ly do
ebu
ylu c6
thi
la
trong ndm 2009, dich xdy ra d mpt so
huy?n
thupc dia ban thanh pho Ha Ndi va thdi dilm Idy
mdu triing hpp vdi thdi diem dich dang xay ra.
Sd lieu d bang 3 dupc minh hpa dudi dang
bieu do d hinh 1 cho thdy trong khi ty
1$
nhilm
cac virus cum A ndi chung khd dn dinh d miic
11,28%
thi ty le luu hanh cua cdc virus cum A/
H5N1
CO
khuynh hudng gidm ro
r?t.
Cy
thi:
1,11 % ndm 2009 gidm xudng

0,31%
nam 2012
va 0,17% nam
2013
(tinh
din didng
6/2013).
Tuong tu, ty le duang tinh H5 trong tdng s6 cac
virus
ciim
A cung gidm: tii 31,25% ndm 2009
xu6ng 2,44% nam 2012 va 1,54% ndm
2013.
D€
tim hieu them nguyen nhan
ciia
si^
luu
hdnh virus
ciim
A/H5N1 tai 4 chp dau
m6i,
chiing tdi
tidn
hanh phdn
tich
dien bien cua
duang tinh virus cum
A/H5NI
trong mdi tuong

quan vdi ngudn g6c gia cam luu th6ng tai chp.
Ket qua dupc trinh bdy d bdng 4.
Bang 4. Nguon
goe
gia cam va
SIP
1U>U
hanh virus
ciim A/HSNI
Ngudn
Ngoai tinh
Cum
A
H5N1
Ch?
Ha Vy
40%
6,82%
0,31%
Bic
Thang Long
20%
33,08%
0
Cho San
10%
13,89%
0,76%
Chf'
Chiic

Som
5%
9,09%
0
Ket qud d bdng tren cho thdy, duang tinh ciim
A/H5NI
chi xay ra d 2 chp: chp Ha VJ - huyen
Thudng Tfn vd chp San - huyen Thach Thdt.
Trudng hpp mdu duang
tinh
d chp San chi
xay ra vdo dung dpt cd dich ndm 2009. Nhffng
ndm cdn lai cdc mlu d chp Sdn cung dm tinh
tuang
ty
nhu cdc mdu d chp Bac Thdng Long
va chp Chiic Son. Ket qud nay chiing td su luu
thdng gia cam chii yeu cd ngudn gdc tir Thanh
phd Hd
Npi
it cd nguy co nhilm virus
ciim PJ
H5NI. Tuy nhien khdng
thi
chu quan vdi nhdn
xet nay vi
th\rc
te da xdy ra 3 trudng hpp duang
tinh cum A/H5N1 cho ndm 2009 khi dich xuat
bien vd cdc mlu nay

diu
cd ngu6n gdc npi tinh.
Sd mdu duang tinh cdn lai chi tap trung d khu
vuc chp Ha Vy,
nai
cd 40 % sd gia cdm
luu
thdng cd ngudn gdc ngoai tinh (khdng
loai
trir
kha ndng gia cam nhap tir bien gidi). Nhdn xet
nay cho thay, viec giam sdt virus tai chp gia cdm
song la ddc
biet
quan trpng d6i vdi nhimg ddu
mdi cd su giao luu nhieu gia cdm c6 ngudn gdc
ngoai tinh,
noi
ma Thanh phd khdng the chu
dpng kiem dich, khong the kiem sodt neu gia
cam da dupc hem phdng vacxin
ciim
A/H5N1
va khd ndng bdo hd cua chiing.
KHOA HQC
KY
THUAT
THC
Y
TAP

XXI SO 1 -
2014
DI
1dm sang td
mdi
tuong quan giua ty le
nhilm virus
ciim
A/H5NI
tai chp ddu mdi vd
vdi ty le tiem phdng vd bao hp d gia cdm cd
ngudn gdc npi tinh, chiing tdi phdn tich ty le
duang tinh virus
ciim
A/H5N1
so vdi ty le tiem
phdng trong
nh&ng
nam vira qua, ket qua dupc
trinh bay
d
bang 5.
Bang 5. Ty le tiem phong cum
A/H5N1
tai dja ban va va
sir lu-u
hanh virus tai
chg>
Nam
2009

2010
2011
2012
2013
Trung binh
Virus cum A
3,56
13,35
10,42
12,81
11,28
11,31
Virus
cijm A/H5N1
1,11
0,00
0,00
0,31
0,17
0,29
Ty le tiem phong
52,30
88,10
82,50
104,90
81,95
Ket qud a bang
5
cho
bi^t

qua
5
nam theo ddi,
(ngoai trir nam 2009) ty le tiem phdng vacxin
ciim
A/H5N1 dudng nhu khdng cd dnh hudng
den ty le luu hanh cac virus
ciim
A
noi
chung
(6n djnh d
miic
10,42
din
13,35% tii 2010
din
nay),
tuy nhien cd the anh hudng den
sir
luu
hanh
ciia
virus
ciim
A/H5N1.
So lieu thdng
k6
d bang
10

cho biet thdng tin ve cdc
trudng
hpp
duong tinh virus
ciim
A/H5NI
tai chp Ha Vy va
chp San nam 2009 cd lien quan mat thiet den ty
Ie bdo hp sau tiem phdng; trong nam 2009, ty le
tiem phdng tren tdng dan chi dat 52,3 % (va
kit
qua giam sat sau tiem phdng cho biet, ty le bdo
hp sau tiem phong ciing chi dat 56,48 % [khdng
ddn s6 lieu]) va dich
ciim
gia cam do virus
ciim
A/H5NI
xay ra tai mpt sd diem thupc dia ban
thdnh phd. Do chp Sdn chu yeu luu th6ng cac
gia cdm cd ngudn gdc trong tinh (90%), sd gia
cdm
CO
ngudn gdc ngoai tinh chi chiem 10%.
Tren thuc te, chiing tdi cung da xac nhan cd
mau duang tinh H5 nam 2009 tai chp San
diu
CO
ngudn gdc tir ga nudi tai dia phuang.
Hoan canh d chp Ha Vy phiic tap han rat

nhieu do
gia
cdm dupc nhap tir nhieu ngudn
khac nhau; gia cdm mdi va gia cdm cu chua
ban
het dupc nhdt chung d mot mat dp cao. Co
thS
nhin nhan qudn the gia cdm
a
chp Ha Vy la rapt
quan the h6n hpp cua ga va thiiy cdm du
loai,
du
gidng da dupc tiem phdng (cd ngudn gdc tir dja
phuang) va cd the chua dupc tiem phdng (tir cac
ngudn
goe
khdc). Qudn the ndy chiia dung mpt
nguy
CO
nhilm vd lay nhilm
ciim
A/H5N1 rat
cao ma sau do phdt ra theo dudng
v^n
chuyen
gia cam sdng.
DI
danh gia
diem

ndng nguy ca theo thdi
gian thdng trong nam, chung tdi sii dung so
lieu
cdng ddn theo thang qua 5 ndm thuc hien
chuong
trinh gidm sat.
Kit
qua dupc trinh
bdy a
bang
6
va hinh 2.
KHOA
HOC KY
THUAT
THO
Y TAP XXI
S6
1 - 2014
Bang 6. Dien bien
s^
lu>u
hanh virus
t^i
cho'
dau moi theo thang
(2009-2013)
Thang
1
2

3
4
5
6
7
8
9
10
11
12
Tong
So mau
giim
sat
96
288
288
384
384
384
288
258
192
192
192
192
3138
Diromg
b'nh
cum A

19
50
113
54
25
9
13
10
11
13
18
^
20
355
Tyie%
19,79
17,36
39,24
14,06
6,51
2,34
4,51
3,88
5,73
6,77
9,38
10,42
11,31
Duvng
b'nh

cumA/H5N1
1
0
3
2
3
0
0
0
0
0
0
0
9
Tyif
%
1,04
0,00
1,04
0.52
0,78
0,00
0,00
0,00
0,00
0,00
0,00
0,00
0,29
(A) Ty le

nhi^m
virus cum
A:
So miu cd gene M/tong so mau xet nghiem
n
^
n n n
n
Fh
1.20
1.00
—
0.80
•fl).
•|?
0.60
-
0.40
0 20
0.00
•M
(B) Ty le
nhl§m
virus cum
A/H5N1;
S6
mlu
co gene H5/t6ng s6 mau xet nghiem
1
Thang 1 2 3 4 5 6 7 8

9
10 11 12
Hinh 2.
DiSn
bien luu hanh virus
ciim
theo thing
(2009-2013)
KHOA HOC
KY THUAT
THO Y
TAP XXI
SO
1
- 2014
Kit
qud tren cho thdy duang tinh virus cum
A ndi chung tap trung trong khoang thdi gian tir
thdng
12
nam trudc den thang 4 nam sau, duang
tinh
ciim
A/H5N1 cham han 1 thang, chu yeu
tap trung vao thang I
din
thang 5.
Cd the
coi
day la thdi diem nhay cam luu

hanh virus
ciim
A/H5NI lien quan den 3 yeu
td chinh:
- Day
la
thdi diem trudc vd sau Tet cd truyen,
la thdi diem cd su luu thdng gia cam manh nhdt
trong nam va tat nhien bao gdm ca su
luu
thdng
va buon ban
gia
cam cd ngudn
goe
ngoai tinh.
- Ddy la thdi
di8m
ma thdi
tiet,
khi hau dm va
mua nhieu la dieu kien thudn Ipi cho su t6n tai
va
lim
hanh vims cum A ndi chung, virus cum
A/H5NI
ndi rieng.
- La giao thai cua dinh ky tiem phdng dai tra
(thang 4 tiem dpt
1)

va cung la
Iiic
tai dan vdi sd
lupng ldn. Thdi diem nay cd nhieu gia cdm chua
duoc tiem phong hoac dupc tiem phdng da
ldu,
het thdi han bao hp,
Nhu vay cd the xdc dinh thai diem ndng
va nhay cdm ddi vdi
sir luu
hanh virus
ciim
A/
H5N1 la thdi diem trudc va sau tet c6 truyen,
cung la thdi diem trudc khi tiem phdng vacxin
ciim
A/H5N1
dai tra dpt I trong nam.
IV. KET LUAN
VA
DE NGHI
4.1
Ket
ludn
- Trong 4 chp, chp Ha Vy la chp budn ban
gia cam ldn nhdt, cao diem Ien tai 81.000 gia
cam/ngay va ty Ie gia cam ngoai tinh dua ve
cung nhieu nhdt tdi 40% so vdi 3 chp (chp
Bde
Thang Long, cha San, chp Chuc Son). Cdng tac

kiem
dich
va kiem sodt giet md da dupc cdc co
quan chiic nang
chii
y quan Iy chat che.
-
Tai
4 cho dau m6i, ty le luu hanh virus
ciim
A trung binh d
miic
11,28%,
trong dd 2,54%
Id virus
ciim
A/H5NI.
Diln
biln
luu hanh
ciia
virus cum A ndi chung
Id
6n dinh qua nhilu
nam, trong nam ty le
luu
hanh cao han tii thdng
12
nam trudc den thdng 4 nam sau.
- Su luu hanh cua virus cum A/H5N1 tai 4

chp ddu moi tir
1,11%
nam 2009;
0,31
vd 0,17
Vo
cho nam 2012 va 6 thang dau nam 2013 co
m6i lien quan chat che den den ngudn gdc gia
cdm tii ngoai tinh, ty le tiem phong va ty le bao
hd gia cam sau tiem phdng.
- Su luu hanh cua virus cum
A/H5NI
tai 4
chp dau moi chu yeu vdo cdc thang 1- 5 trong
nam la thdi diem tieu thu, luu thdng gia cdm
manh (trudc vd sau Tet Nguyen dan) dong thdi
la giao thdi ciia dpt tiem phdng vacxin
ciim
A/
H5N1 dot
1
trong nam.
4.2 De nghi
-
DI
nghi Thanh phd duy tri
kinh
phi de ca
quan chuyen mon gidm sat chat che, dinh ky
sir

luu
hanh
ciia
virus
ciim
A/H5N1 de du bao sdm
tinh hinh dich benh, ddc biet
chii
y ddi tupng
la thuy cam vd vao giai doan trudc vd sau Tet
Nguyen dan.
- Chi dao tiem phdng ddm bdo cho dan gia
cam cd ty le tiem phdng va ty le bao hg cao.
Tiem
phong bd sung kip thdi va triet de cho doi
tuong cd quy md dan tir 100 - 5000 con, giam
thieu kha nang nhilm virus neu cd tir cac ngudn
ngoai tinh.
- Tang cudng cdng tac kiem dich vd kiem
soat gilt md tan gdc, giam thieu viec nhap, xuat
gia cdm sdng ngudn gdc ngoai tinh va khong
qua kiem dich.
TAI LIEU THAM KHAO
1.
BCDQG. Ban chi dao Qu6c gia phong
chdng benh
ciim
gia cdm. (2013) Bdo cao
tdng
kit

cdng tdc 2 nam phdng chdng dich
ciim
gia cdm, Hpi nghi tdng ket 2 ndm
phong chdng dich
ciim
ga. ngdy 18
thdng 4
nam 2005, Hd
NQI.
2.
Cue
thu y
(2013)
Website
Cue
thu y.
hftp:f/
cucthuy.gov.vn
3.
Nguyen Tien Diing, Dao Thanh Vdn, Bin
Ngoc Anh, Ken
Inui,
Nguyin The Vinh,
Nguyin Bd Thanh, Pham Thi Kim Dung.
KHOA HQC KY THUAT THC Y TAP XXI
S(3
1 - 2014
(2005) Gidm sat tinh trang nhiem virus cum
gia cdm tai d6ng bang sdng Cim Long cuoi
ndm 2004. Tap chi Khoa

hgc
f^
thudt Thu
y
2(12)
13-18.
Truong Vdn Dung. (2008) Nhung
Kit
qua
nghien
ciiu
da dat dupc ve benh cum gia
cdm d Viet Nam. Tap chi Khoa hoc ky thual
thuy
\5
{A)
5-%.
Td Long Thanh (2004) Benh
ciim
gia cdm d
ngudi vd van dl phong chdng.
Tap
chi Khoa
hoc ky
ihugt thuy
3
(11)
76-83.
Council of European Communities
[1992]

Council Directive 92/40/EEC of
J
9th May
1992 introducing Community measures
for the control of avian influenza. Official
Journal of Eropean Communides, 1-15.
Hinshaw,V.S., Webster,R.G., Easterday,
B.C., and Bean,W.J., Jr. [1981] Replicadon
of avian influenza A viruses in mammals.
Infect
Immun,
354-361.
8. Kawaoka.Y [1991] Difference in receptor
specificity among influenza A virus from
different species of animals. J.Vel.MedSci,
357-358.
9. Kishida,N., Sakoda,Y., Isoda,N., Matsuda,K.,
Eto,M.,
Sunaga,Y.,
Umemura,T., and Kida,H.
[2005] Pathogenicity of H5 influenza viruses
for
ducks,
^rc/7
Viwl,
1383-1392.
10 OIE
and Council of European Communities
[1992]
Council Directive 92/40/Eec of

19 th May
1992
introducing Community
measures for the control of avian influenza.
Official Joumal of European Communities,
1-15.
Nhdn
ngay
7.11.2013
Phdn bien
20.11.2013
TO
CHlTC
HOI THAO PHO BIEN KIEN
THlTC
CUA HOI THU Y VIET NAM NAM 2013
Ngay
11/12/2013
dugc
sytai trgrkJnh phiciia Lien Hiep
cac
Hoi Khoa
hpc va Ky thuat
Viet
Nam,
HpiTTiii
y
Viet
Nam da
phoi

hop
vai
Chi
eye Thii
y Bac Ninh
t6
chiic
hpi
thao pho
biln
kiln thiic voi chuyen de " Mot
so benh truyen nhilm nguy hiem
d
dpng vat lay sang
ngudi"
cho cac can bp lam cong tac chuyen mon ve
ch5n
nuoi,
thii
y cua So N6ng
nghi?p
& PTNT,
Chi eye thii
y,
Trgm
thu y, cac trang trai chan nuoi tap trung va cac
hpi vien cua Hoi
Thii
y
a

Bac
Ninh
So dai bleu tham
dir
hoi thao tren 200
nguai.
Den
d\f
Hpi thao c6 dai bieu
ciia
Lien Hiep cac
Hpi
Khoa hoc va Ky thuat
Viet
Nam,
d^i
bieu cua So Nong
nghiep
va
PTNT tinh Bac Ninh.
Phat
bieu khai
mac hoi thao, GS.TS
D^u
Ngoc Hao -
Chii
tjch
Hpi Thii
y
Viet

Nam
d3
neu ro muc
dich,
y
nghTa
ciia
hoi thao la
viia
pho
bien kien
thiic
ciia
cac chuyen
gia,
dong
then
cac dai bieu se
ihao
luan sau
sic
cac chil de de cap de
lain
ro
duqc
trong thuc te lam sao han che toi da nhiing benh truyen nhiem nguy
hiem 6
dpng vat lay sang
nguoi,
gop phan phat trien

chSn nuoi
va dam bao
siic
khoe cpng dong cho nguai dan tinh
Bac Ninh.
Sau bai trinh bay
ciia
cac chuyen gia: TS. Nguyin Van Cam, GS.TS Dau Ngoc Hao ve "Mot so benh truyen
nhiem nguy hiem
6
dpng vat lay sang ngucri" va mot s6 "chuyen de chuyen mon" ma can bp chan
nuoi,
ihii
y
tinh
sdc
Ninh quan tam la phan trao doi
Ihao
luan
ciia
cac dai bieu.
TS.
Nguyin Nhan Limg - Chi
eye
truong Chi
cue thii
y
Bde
Nmh da
chii

tri
buoi
thao luan, cac chuyen
gia
giai dap, trao doi
nhthig
y kiln neu len cua cac dai bieu tao nen khong khi ccn mo, than mat va
hieu biet
sau
s3c
nhihig vdn de de cap trong hpi thao.
Thay
m3t
cho Ban tl chiic Hpi thao, GS.TS Dau
Ngpe
Hao -
Chii
tich
Hpi
Thu y
Viet
Nam chan thanh cam
an
SV giup
dd
t^n
tinh
ciia
Ban lanh dao Chi
eye thii

y
Bk
Ninh trong khau to
chile,
cam on
Lien hiep
cac Hpi
Khoa hpc va Ky
thu^it
Viet Nam
da giiip
d& vl mat kinh phi dl tl chiic
Hpi
thao thanh cong
toi
dep
py.