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Chương 1 - TỔNG QUAN
1.1. Virut sởi
1.1.1. Phân loại
  !G;M$G80$$98  M  *
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‹#/92P!{
‹=>%9F
18M$9{;K0Oq•8@

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 -{HqH6;€9dGHI#/2?7/$%0g
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 18G/G)•5HHI#/92K08d7;e
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1.1.2. Hình thái học
|.BOL0:=l 0/#;8G.k68$,/)
8$ !G|%{8‘9*f(yf8@’P$5 =$qGJ$D

M$qG( N•h.k{I.k“f/H€s&o3o;f
k9(G3o;9$~;T5$P10$78‘5 =G”
RG9MP=/IHN,%$(J$DK8@5$P‘$Gl
78 !G,/$5$P8@,.B~yQ'S({G
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1.1.3. Cấu trúc kháng nguyên
$9/8G$;Hj;0L+,-.)/0.)7
8 !ˆ
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 V)/0.B~y
 V)/0;)
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$H{f.)/0kH6d9B8 !G.)/0
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y.B$h8GHM8d,/J,2.)6 !8@2)
$fK#/;<=>9c8J !9,$%9!Œ$;v+w
U?)HM|.)/0.B~y78 !8@~
y.•7/BG=$5L:P•/;P8(KHM5L:.B~y
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V)/0.B~y9I8|8@2HMTo
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)0:$,/)6=$$%k.B~y
78- !.g9>5)7/9!)P•/;P5)7/6).)
/0.B~yŠ.g%/L;8@)P•/;PR•
8Gi•vAw
V)/0;)G;M/$5$P{09I;q8‘$G8
8@:t=N5B9G$H6%$)N59G$'$%k;)78
!{0Oq•8@.Lt#/7/$%B9G$ @;f{-5$
8 !=<=GJ#;d58G$90$B9G$8G:8@.Lt#/
<;78
V)/0;){5'kN5GCfov+w
V)/0Fc;!8‘$G88G;8G$5L:
FvfTw
1.2. Bệnh sởi
1.2.1. Chu kỳ phát triển của virut sởi trong cơ thể bệnh nhân
12 !G;M92<;lHhg,5{.Lt#/<;
$12G//#/HB”Eo–|hB5J-8@92# •9>#/
!B0;5F !{!;Š8G€*792#'*
hHj{6#/92$h.)+G/@.8BH‘J,2V
92#$fDJ(f/{/2f|*@,‘{:8 •
9D.g.k8Gh.){6k8G$8G* •9>#/92M.8
3
!8G$692#f-h#0$|B9G$Hhg
,50UH{92 •.D56.6L2g,58G=
* Triệu chứng bệnh:V$Lo@&G/ .B5J-8@8
!f|2: H#/{6JL/ˆ
UKf'$.fL/@;ŠfDH‘f
|K,‘8@#;;yJDJ,290$
;0;;%;)|KG/{0GHK;V$5.
h;*|HK;H‘@f5—f;8G$
* Diễn biến của bệnh

Giai đoạn ủ bệnh
h.4792h.˜$=GsoHB&G/Ghs.
8 #/92 !J#;d58G$6 HB.J,2|=,2
Hy07H$%I 2$H$%G/.g9622
:(792
Giai đoạn tiền triệu chứng
H$%I2h.˜$=GHB3G/HNHq9! K
;:HM™HB8sf$.fL/;Š@f80;.B;%;D|2
:G/yggJL/@.M9J,2M9/%
V$5.G=,2•H6;792'%V$5.G|%‘9c%)f
;GDGfJO{8IH‘'%hJ,28G9B;,
$8F&HB&+hVB;%;D{69>80;H‘8G{=,2 N)
)
Giai đoạn phát ban
T
#/GH$%H6(,7928@2:5)9y?
0=1hJ,2Hy0!8l#{5k f H{J,
2!;q8G=yJK5k=@$8F&+HB+Ch1 !G
|9=%=) b€009I;q=f h;>8G.g
Hf.g$qk:f.g ;7$hN5™f9h
H:y0•$hN5qf9{J@N58@
G;G|9@fd;ks;LJ,/BQ !HPS
$6Hq92qf9{6{=,2J,/BV9HB#
( KŠHMML;HB.g{9B:UH{9Š%
=y8G;,HH-P$y?{HjJ,2fšGŠs0JK
=@U.9;,Hf0=F%|=,;G d;K;HK;8c
=9)$vow
Sởi không điển hình
M KhN590 !962.gK;0L!0
$hN592#9> /L;;<=>f9{6.gH6(

)hN5G/h,/!92#ZiUfM:dfHI>
K:B;<=>
1.2.2. Đáp ứng miễn dịch tự nhiên với virut sởi
)5:;<=>OB9G$G962O*L
H$%92•8G5~92aBH)5:;<=>Hq29DHyl
8@|962#; G792f@.5)98G.˜$=G$8F
8Gy .~592).)6=$H)5:;<=>?0
/.9J,2V!HyGZB5 G)Z8GZ$/B
8G=>B).)6G/ c;K%).)/0
%$6-H%H•$8G$G/:AHB:o .5)9f
A
H{L;8G9B;,).)6HN H6?B5.)
%)5$P.)78HN5)2.gK9c)
J˜2;/B*V)68@5$PHN LJ,8G
IfHNJ)H>/H$%<;l05)9c.•d.BN5
9€6k8( ?(G.)6.)!;:HMI8d/$
5˜5dH>.BOLG#;k..g5)2HN-$/B
vAwU..‘92f6- •{.)6K920
•.g;D92 !%|B9% @t;E3Af9%hHj{
.)6K92=lI7s›{G8(9%Hj KOI
h.4;G92 !$GG,I8GI5y9%Hj{<;8
=l{6.gMi$H{9%Hj{HN;<=>
1.2.3. Biến chứng của bệnh sởi
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80;j$k)9B:G/G;.˜$=Gh92fL!HB
==“7r'dOLG /==“
 0;5€9B:#/=$k9L#8 !Q80;5€B9G$
.€~S0;5€=$ !!92#ZiUh#/W8$8GB;.
{9H6(hq5G9M<;8.b#/080;5€)
8.bhq5G5By.bf0y.b{;fy.b8G

'P;$5 ZŒP•P•59
& 0;|  G9B:gg5LšHB!r;D !
/0##/92Š?$80;5€B.g5)2
.>5hf80;|{6#/7;GšfL!HBk?g
.80;|,5.gHNHI>H-{6HHB80;|;%
k8@9B:/6;G80;J7;8G)5JPj$
C
 0L/ŠG9B:hq5 ;D !fHq92!|
r /==“8GB8;r=<9>;Dœ?l8G0L/
.˜$=Gg.=$6 /.2f92=<{/<;l/B
0H6;sM
+ 0;$˜);%ˆH#/G9B:.H68GH) Nr /=
=“8GB8;G|HKN{/$,12{6
=<9Bs$˜#/;h);%f‘$G9M);%HBG;;7$
jy'dOLGL;>?HB;l8š8<$G9M1B:G/
2/ŠHjL;’hHI.2==“HNL28Gh8G$
B=>9€ 8;$MH~
3 U!G; /L;:t;<=>760{6%$HI.2
$6$I;b)9l5);%;•
T 0;; Š{6JL/B;q5
A 0;j$ @k.$L&•ooohN5;D !Vg{;K
O|;:HMq792 !8@.LtJ,280;j$
Š.g{O|2:.!Hy780;j$8@0
N7{{680;j$=$ !M6G=$5L:;<=>
gO ?(G5:N5.)/0.)6M6.)G=$
?2=278 !~%$B9G$y.#/080;j$d;
{6J,23t;d;k3t; .;D !
C )9B:y..)G M:1˜Pf2W
hf/B.Kš;%j$fhkq5vw
1.2.4. Tình hình mắc bệnh sởi hiện nay

1.2.4.1. Tình hình mắc bệnh sởi trên Thế giới
E
12 !{;q!.D5)@0B@|@0;5F
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