Cau 88: Vr bai liet

1/ khnag gay benh: - Vr bai liet (Poliovirus) gay benh bai liet. Benh bai liet la 1 benh nh.trung dg ruot cap tinh do vr gay ra. Vr bai liet gay ton thg cac tbao sug trc tuy sog va cac tbao van dog cua tkinh TU.

-doi tg cam nhiem: ng la duy nhat

-dg lay: dg tieu hoa la chu yeu, 1 phan nho lay qua dg ho hap.

- so do co che gay benh cua vr bai liet:

VR Bai liet phan

Niem mac niem mac

hau hog og tieu hoa

Hach nhan mang Payer

Cac hach hach mac

lympho sau treo

vug co

mau

phan lon phan nho

TKTU to chuc

dem cua TK

- gdoan nhan len cua vr o dg tieu hoa tg doi dai ( time vr dc dao thai ra phan dai hon cac vr dg ruot #.

( lquan den time lay phan de phan lap va xdinh vr.

-tren lsang gap 2 the

*) the dien hinh:

-tky nug benh: khoag 5-6 ngay, ko co tr.chug ro ret

- khoi phat: 2-3 ngay

+ sot 38-400C nhug ko co co giat va ret run

+ dau o vug sap bi liet

- toan phat: + b.nhan xhien liet toi da 48h.

+ dac diem: liet mem

- di chung: + co thoai hoa, teo nho

+ xg nho ko phat trien

+ tan tat vinh vien

*) the dien hinh: ko bieu hien, b.nhan chi co tr.chung

nhe ve tieu hoa, ho hap. ( nguon lay lan kho phat hien de phong ngua

2/ phong benh: - dac hieu: hien nay co 2 loai vacxin

+ vacxin Salk: chi tao dc mien dich dich the ( chi co t/dung ngan vr len TKTU.

+ vacxin Sabin: tao dc mien dich tai cho va toan than, de thuc hien, re hon Salk H" 100 lan. (VN dag dug)

- ko dac hieu: + nguon benh: chan doan, phat hien kip thoi, cach li b.nhan va tay ue, khu trug nhug chat thai, do dug co lquan b.nhan = chloramin 1%/1h.

+ dg lay: an chin, uog soi, ve sinh nguon nc, ca n é

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han. xu li chat thai, diet ruoi

+ doi tg cam nhiem: thuc hien day du lich uog vacxin phog bai liet trog chtrinh tiem chug mo rog.