Gripa aviara a bagat spaima in continentul asiatic. De la sfarsitul anului trecut, de cand s-a declansat nebunia, milioane de pui au fost sacrificati, iar ingrijorarea medicilor a crescut tot mai mult, pe masura ce s-au semnalat cazuri de contaminare la oameni. Romania si-a luat si ea masuri de protectie. Agentia Nationala Sanitar Veterinara a interzis importul de pasari vii din zonele respective, informeaza Ministerul Agriculturii, Padurilor, Apelor si Mediului. in incinta fermelor avicole nu vor mai patrunde persoane, vehicule si animale, decat printr-o intrare special amenajata, aflata sub control sanitar veterinar. La intrarea in unitatile avicole au fost construite si amenajate filtre, unde se efectueaza schimbarea obligatorie a hainelor si incaltamintei de strada cu echipament de protectie.
Autoritatile aradene au instituit, ieri, filtre sanitar-veterinare la toate fermele avicole din judet, pentru a preveni aparitia gripei aviare, a anuntat seful Directiei Sanitar Veterinare Arad, Sorin Iercan, citat de Mediafax. Este vorba de cinci ferme, in care accesul va fi permis doar angajatilor, care vor purta echipamente de protectie antiepizootica. Cele cinci ferme avicole sunt din localitatile Arad, siria si Nadlac.
Boala poate declansa o epidemie la nivel mondial
Ce declanseaza de fapt aceasta boala? „Gripa aviara” este determinata de unul din cele 15 virusuri care infecteaza pasarile, si anume virusul H5N1.
Specialistii Organizatiei Mondiale a Sanatatii (OMS) spun ca acesta este foarte periculos si ridica multe semne de intrebare din cauza faptului ca poate deveni „mutant”. Acest virus si-a dovedit capacitatea de a infecta si oamenii, primul „episod” de acest gen fiind inregistrat in 1997 in Hong Kong, cand au fost 18 cazuri (6 decese). Investigatiile au aratat faptul ca, la fel ca si in cazul de fata, infectia este cauzata de contactul direct cu pasarile infectate.
Medicii explica faptul ca in aceste conditii raspandirea infectiei la pasari e foarte periculoasa pentru oameni. Din combinatia dintre virusul care declanseaza gripa la pasari si cel care o declanseaza la om poate rezulta un nou tip de virus. Acesta, avertizeaza OMS, poate declansa o pandemie la nivel global, cu milioane de victime. ingrijorarea medicilor vine si din faptul ca in multe tari epidemia de gripa la oameni este in plin „sezon”, cele doua virusuri putand foarte usor sa se combine.
Nu se stie exact cand va fi gata vaccinul
Studiile facute pe cazurile din 1997 au indicat faptul ca la om gripa aviara se manifesta prin simptome ca febra mare, durere in gat, tuse si probleme respiratorii grave sau chiar pneumonie virala.
Conform unui oficial OMS, citat de Mediafax, un vaccin impotriva epidemiei de gripa aviara nu va fi disponibil inainte de sfarsitul acestui an. „Am elaborat un potential vaccin, care are la baza esantioane de virus recoltate in timpul epidemiilor din 1997 si 2003 de la Hong Kong. inainte ca vaccinul sa fie expediat, virusul a suferit mutatii in Vietnam, vaccinul devenind inutil. Trebuie sa o luam de la inceput”, a declarat acesta.
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