Ký sinh trùng thường gặp trong thủy sản

Giun anisakis co trong thuy sin

Thuy san Id nguon thffc pham bo dffdng nhffng

ciing tiem an nhiJng md'i nguy. Trong sd' cde

md'i nguy tilm an cd trong thuy san thi ky

sinh trung hien dang dffdc cac nha khoa hoc lan ngffdi

tieu dimg quan tam. Haunhff td't ca cdc lodi thuy san

deu cd thi hi nhilm ky sinh trdng mot each tff nhien.

Hien nay, nhieu ngffdi vd tff an cdc loai gdi ed vd

ca nhffng mdn du nhap tff nffdc ngoai,,. hodc an cdc

thffc pham thuy san dffOc nd'u nudng khdng dung each,

khong chin ky ma khdng he bilt trong dd dang cd an

chffa md'i nguy ky sinh trung gdy anh hffdng nghiem

trpng dd'i vdi sffe khde. Cac ky sinh trung de dang bi

gid't chit khi nd'u chin thffc dn nhffng ngffdi ta lai sp

md't vi ngon va tinh ha'p ddn cua mdn an. Thdi quen

thich dn dl sd'ng trong khi lai khdng thffc hien ve

sinh an toan thffc pham dd gay nen khdng it nhflng

tac hai khdn Iffdng dd'i vdi sffe khde.

Cd tfftfi mua ngodi chp vl mo ra thay luc nhuc

giun san trong rupt la chuyen cd the. Viet Nam Id

mdt trong nhffng qud'c gia nhiem giun anisakis, giun

dau gai Gnathostoma vd san vdi ty le cao. Day la eae

loai ky sinh trung gay hai nghiem trpng cho sffe khoe

ngffdi tieu diing khi an thuy san khong dung cdeh.

Giun anisakis

Cac loai ddng vat bien thudng nhilm giun trdn

anisakis. Loai giun nay phan bd kha rgng rai 6 ede

nUde khap ncfi tren the gidi, ke ca Viet Nam, Trffng

giun theo phdn ra ngodi, nd thdnh a'u trung trong

nffdc bien, sau dd bi lodi gidp xde dn. Ca biln an giap

xde vd bi nhilm ky sinh trung anisakis. Giun trffdng

thdnh sd'ng ky smh trong xoang bung cua ede lodi cd

voi, cd heo, hai cau... Au trung ciia giun ky sinh d cdc

lodi cd nhff ed thu, ca hoi, ed trich, mffc d'ng.,.

Khi dn ed sd'ng (gdi cd, sushi,,,) nhilm giun anisakis

thi giun se bdm vdo rudt hode chui sau vdo ldp cd ciia

thanh rudt vd tao nen nhCfng I dp xe gay phu ne, day

30

Ky sinh trung

trono cffng nidm mac thanh da day, rudt gay n^n nhCfng

cdn dau bung va ndn dff dpi kem theo sd^t vd Iffdng

bach cau tdng. Giun cung cd th i xuyen thung qua rupt

vd lot vdo xoang bung gay nen viem phuc mac rat

nguy hiem, tuy nhidn dilu nay rdt hilm thay. Binh

thffdng, sau 3 tuan ll thi giun se bi loai ra ngoai, hodc

nd tff huy di. Trffdc tinh hinh phat trien qud nhanh

cua cac nha hang, qudn an cd ban gdi cd, sushi thi e

rang bdnh do ky sinh trung anisakis se cdn gia tang

them hdn nffa. Hien nay, chffa cd thuoc dac tri cho

cae trffdng hpp nhilm a'u trimg giun anisakis.

San

San thffdng xdm nhdp vdo cd the ngffdi thdng qua

nhulig mdn an chffa chin ky. O mot so' tinh miln

Trung, ngffdi ddn thffdng hi nhiem sdn Id gan nhd

do tap qudn dn goi ca sd'ng. Chung di chuyin din

cho lam to roi phat trien vd cd thi tin tai nhilu

nam trong ed the ngffdi md khdng gdy ra bd't ki tripu

chffng ndo.

Sdn cd the lam to tai nhilu bd phdn khdc nhau

tren co the eon ngffdi nhff: gan, rupt hay nao... Au

trung sdn ddy cd the lam nang san trong nao, tao ap

Iffc len nao, gay dau dau dff doi, dpng kinh, rd'i loan

tri nhd. Nang sdn d mdt ed the gay tdng nhdn dp,

giam thi lUe hode mu. Sdn Id phoi gdy ho ra mdu vd

ed thi ddn de'n tff vong...

Mdt trong nhflng hau qua nghiem trong cua nhiem

loai san nay la ve lau ddi se bi xcf gan mat, ung thff

dudng mat da dffpc chiJng minh va bao cdo qua y vdn.

Vong ddi cua skn Ik vdi ck Ik vkt chu trung gian (Au trung

skn Ik nhiim vko ca thd ngudi do kn hki skn. trdng theo phkn

nhiim vko moi trddng nddc vk nhiim vko gikp xkc rdi vko ck).

THUOC & SOC KHOE sd 504 (15.7.2014)