Gripa se poate transmite daca cineva din apropiere care are boala stranuta si tuseste sau prin simpla atingere a unei suprafete cum ar fi un receptor de telefon, clanta unei usi, daca acestea au fost in contact cu o persoana bolnava. Virusii gripei pot trece prin aer si intra in corp pe gura sau nas, iar daca a fost atinsa o suprafata contaminata virusii pot trece de pe mana la nas sau gura. Riscul cel mai mare il au persoanele care stau in medii foarte populate (aglomeratie sau scoala).
Dupa ce virusul a intrat in organism, simptomele apar in una-patru zile mai tarziu, acesta putand fi transmis chiar daca simptomele nu si-au facut inca aparitie si chiar dupa trei-patru zile de cand acestea au aparut. Printre simptome se numara: durerile de cap, frisoanele, tusea uscata, dureri musculare, febra, nas infundat, raguseala. De obicei, medicul diagnosticheaza gripa pe baza faptului ca e sezon de gripa, ca aceasta este contagioasa, iar pacientul reclama simptomele. Doctorul foloseste apoi testele de laborator pentru a identifica virusul.
Principala cale de evitare a contractarii gripei e vaccinarea anuala impotriva acesteia. Vaccinul e recomandat de medicul de familie. Avand in vedere ca vaccinurile sunt facute cu noua-zece luni inainte de inceperea sezonului de gripa, oamenii de stiinta le prepara din virusi inactivi de gripa. Uneori poate aparea un nou virus, din aceasta cauza existand pericolul de a contracta boala, chiar daca s-a facut vaccinul antigripal. Vaccinul este recomandat persoanelor care au peste 50 de ani, au boli cronice ale inimii, plamanilor sau rinichilor, sunt bolnave de diabet, dar si celor al caror sistem imunitar nu functioneaza cum trebuie sau sufera de anemie. De asemenea, vaccinul e indicat femeilor insarcinate in mai mult de trei luni in sezonul gripei. Daca boala nu este luata in serios, ea poate duce la nenumarate complicatii. Printre acestea se numara pneumonia, o afectiune care poate pune in pericol viata pacientului.
Daca exista simptome precum febra mare, frisoane, dureri in piept si respiratie dureroasa, tuse cu expectoratii de mucus galben-verzui, trebuie consultat de urgenta un medic care va prescrie tratamentul corespunzator.
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