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Influensa

Senast reviderad:


Definition:
Akut luftvägsinfektion som orsakas av influensavirus A eller B, huvudsakligen aerosol smitta.
Förekomst:
Säsongsepidemier, incidens varierar från år till år.
Symtom:
Hastigt insjuknande, hög feber, frossa, muskelsmärtor, irritation i näsa och svalg, hosta, eventuellt kräkningar, särskilt hos barn.
Kliniska fynd:
Feber, rodnad i svalget och nedsatt allmäntillstånd.
Diagnostik:
Typisk klinisk bild under epidemier, eventuellt CRP. Endast i särskilda fall provtagning för influensa (PCR).
Behandling:
Förebyggande behandling med vaccin årligen till riskgrupper inklusive alla >65 år och gravida. Antiviral behandling vid risk för svår influensa, vid tecken på svår influensa eller som postexpositionsprofylax.
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  • Remy Waardenburg, specialist i allmänmedicin, medicinsk redaktör Medibas