<s id="NEST_Infno.s1">Influensa gir feber og smerter i hele kroppen.</s> <s id="NEST_Inf_155en.s1"> Influenza (the flu) causes fever and pain throughout the body.</s>

<s id="NEST_Infno.s2">Vanligvis blir mellom fem og ti prosent av befolkningen syke i løpet av en vintersesong.</s> <s id="NEST_Inf_155en.s2">Between five and ten percent of the population usually get sick during winter season.</s>

<s id="NEST_Infno.s3">Viruset kan enkelte år gi verdensomspennende epidemier med mange dødsfall og er derfor under nøye overvåkning.</s> <s id="NEST_Inf_155en.s3">Some years, the virus may bring about a worldwide epidemic with numerous deaths, and it is for that reason closely monitored.</s>

<s id="NEST_Infno.s4">Faglig revidert: 26.06.2007.</s> <s id="NEST_Inf_155en.s4">Academically revised the 26th of June 2007.</s>

<s id="NEST_Infno.s5">Lenker vedr. influensa A(H1N1) – svineinfluensa langt til 30.04.2009.</s> <s id="NEST_Inf_155en.s5">Links associated with influenza A (H1N1) – swine flu added on the 30th of April 2009.</s>

<s id="NEST_Infno.s6">Oppdatert avsnitt vaksine 22.12.2010.</s> <s id="NEST_Inf_155en.s6">Paragraph rectification updated the 27th of November 2009.</s> <s id="NEST_Inf_155en.s7">Vaccine paragraph updated the 22nd of December 2010. </s>

<s id="NEST_Infno.s7">Hvert år i perioden desember til april rammes befolkningen på den nordlige halvkule av smittsomme influensaepidemier.</s> <s id="NEST_Inf_155en.s8">Every year between December and April the people of the northern hemisphere are affected by contagious flu epidemics.</s>

<s id="NEST_Infno.s8">Dette kalles sesonginfluensa.</s> <s id="NEST_Inf_155en.s9">This is known as seasonal flu.</s>

<s id="NEST_Infno.s9">De vanligste influensatypene som gir epidemier, er type A og B.</s> <s id="NEST_Inf_155en.s10">The most common epidemic causing influenzas are types A and B.</s>

<s id="NEST_Infno.s10">Nye varianter av type A og B kommer hvert år.</s> <s id="NEST_Inf_155en.s11">New variations of types A and B emerge every year.</s>

<s id="NEST_Infno.s11">Nye stammer får navn etter stedet hvor de først ble oppdaget, f.eks type A/Sydney.</s> <s id="NEST_Inf_155en.s12">The new strains are named after the location on which they were discovered, for instance type A/Sydney.</s>

<s id="NEST_Infno.s12">Influensa kommer av det latinske ordet influere – flyte inn.</s> <s id="NEST_Inf_155en.s13">Influenza derives from the Latin word influentia – influence, inflow.</s>

<s id="NEST_Infno.s13">Spesielt om influensa A(H1N1) – svineinfluensa, se rammen til høyre.</s> <s id="NEST_Inf_155en.s14">Particular information on influenza A (H1N1) – swine flu, see the section on the right.</s>

<s id="NEST_Infno.s14">Influensa A(H1N1) – svineinfluensa</s> <s id="NEST_Inf_155en.s15"> Sidebar:</s> <s id="NEST_Inf_155en.s16">Influenza A (H1N1) – swine flu</s>

<s id="NEST_Infno.s15">- Se spørsmål og svar</s> <s id="NEST_Inf_155en.s17">* See QandA</s>

<s id="NEST_Infno.s16">- Se temaside</s> <s id="NEST_Inf_155en.s18">* See subject matter</s>

<s id="NEST_Infno.s17">Fugleinfluensa</s> <s id="NEST_Inf_155en.s19"> Avian Influenza (Bird flu)</s>

<s id="NEST_Infno.s18">Fugle-influensa smitter sjelden til mennesker.</s> <s id="NEST_Inf_155en.s20">Avian influenza, or bird flu, rarely infect humans.</s>

<s id="NEST_Infno.s19">Men dersom det skjer, og disse menneskene samtidig smittes av vanlig influensa, kan infiserte celler i kroppen produsere en krysning mellom de to virusene.</s> <s id="NEST_Inf_155en.s21">However, if this would happen, and simultaneously the humans were infected with a common variety of the flu, the affected cells in the body would produce a cross between the two viruses.</s>

<s id="NEST_Infno.s20">Da kan vi teoretisk få et nytt virus som få eller ingen er immune mot.</s> <s id="NEST_Inf_155en.s22">Theoretically we could get a new type of virus of which few or no one would be immune. </s>

<s id="NEST_Infno.s21">Historie</s> <s id="NEST_Inf_155en.s23">History</s>

<s id="NEST_Infno.s22">Til sammen 18 verdensomfattende influensaepidemier er kjent fra historien.</s> <s id="NEST_Inf_155en.s24">In total 18 global flu epidemics are known throughout history.</s>

<s id="NEST_Infno.s23">Den første pandemien ble beskrevet i 1580.</s> <s id="NEST_Inf_155en.s25">The first pandemic was reported in 1580.</s>

<s id="NEST_Infno.s24">Den største var Spanskesyken i 1918-1919, som førte til 25-40 millioner dødsfall i verden.</s> <s id="NEST_Inf_155en.s26">The greatest of them was the Spanish Flu in the years 1918-19, which resulted in 25-40 million deaths worldwide.</s>

<s id="NEST_Infno.s25">I Norge døde ca. 15 000 personer.</s> <s id="NEST_Inf_155en.s27">Approximately 15000 people died in Norway.</s>

<s id="NEST_Infno.s26">De to siste større pandemiene var Asiasyken i 1957 og Hong Kong-syken i 1968.</s> <s id="NEST_Inf_155en.s28">The two most recent pandemics were the Asian Flu of 1957 and the Hong Kong Flu of 1968. </s>

<s id="NEST_Infno.s27">Influensavirus av type A ble første gang påvist i 1933 og type B i 1940.</s> <s id="NEST_Inf_155en.s29">The type A virus was first detected in 1933; type B in 1940.</s>

<s id="NEST_Infno.s28">På slutten av 1940-tallet ble den første vaksinen utviklet.</s> <s id="NEST_Inf_155en.s30">The first vaccine was developed at the end of the 1940s. </s>

<s id="NEST_Infno.s29">Dråpe- og kontaktsmitte</s> <s id="NEST_Infno.s30">Influensa smitter hvis man puster inn dråper med influensavirus fra smittede personer som hoster eller nyser, såkalt nærdråpesmitte.</s> <s id="NEST_Inf_155en.s31">Infection through direct contact and/or the spread of respiratory droplets Influenza infects if one inhales tiny droplets containing the virus spread through coughing or sneezing.</s> <s id="NEST_Inf_155en.s32">This is known as infection through respiratory droplets.</s>

<s id="NEST_Infno.s31">Man kan også smittes ved direkte kontakt.</s> <s id="NEST_Inf_155en.s33">One may also get infected through direct contact.</s>

<s id="NEST_Infno.s32">En liten smittedose er nok for å gi sykdom.</s> <s id="NEST_Inf_155en.s34">One small dose is enough to cause illness.</s>

<s id="NEST_Infno.s33">Inkubasjonstiden fra smitte til symptomer er vanligvis to dager, men varierer fra en til tre dager.</s> <s id="NEST_Inf_155en.s35">The incubation period between infection and the appearance of symptoms usually lasts for two days, but it varies from one to three days.</s>

<s id="NEST_Infno.s34">Man er smitteførende fra den dagen symptomene viser seg og i tre-fem dager etterpå.</s> <s id="NEST_Inf_155en.s36">A person is contagious for three to five days, starting with the day the first symptoms emerged.</s>

<s id="NEST_Infno.s35">Når man har gjennomgått influensasykdom med én virusstamme, er man vanligvis immun i mange år etterpå mot denne stammen.</s> <s id="NEST_Inf_155en.s37">Once you have undergone one type of influenza, you will most likely be immune against this strain.</s>

<s id="NEST_Infno.s36">Man kan også være immun mot lignende stammer, såkalt kryssimmunitet.</s> <s id="NEST_Inf_155en.s38">It is also possible to be immune against closely related strains, also known as cross-immunity. </s>

<s id="NEST_Infno.s1">Influensa gir feber og smerter i hele kroppen.</s>	<s id="NEST_Inf_155en.s1"> Influenza (the flu) causes fever and pain throughout the body.</s>
<s id="NEST_Infno.s2">Vanligvis blir mellom fem og ti prosent av befolkningen syke i løpet av en vintersesong.</s>	<s id="NEST_Inf_155en.s2">Between five and ten percent of the population usually get sick during winter season.</s>
<s id="NEST_Infno.s3">Viruset kan enkelte år gi verdensomspennende epidemier med mange dødsfall og er derfor under nøye overvåkning.</s>	<s id="NEST_Inf_155en.s3">Some years, the virus may bring about a worldwide epidemic with numerous deaths, and it is for that reason closely monitored.</s>
<s id="NEST_Infno.s4">Faglig revidert: 26.06.2007.</s>	<s id="NEST_Inf_155en.s4">Academically revised the 26th of June 2007.</s>
<s id="NEST_Infno.s5">Lenker vedr. influensa A(H1N1) – svineinfluensa langt til 30.04.2009.</s>	<s id="NEST_Inf_155en.s5">Links associated with influenza A (H1N1) – swine flu added on the 30th of April 2009.</s>
<s id="NEST_Infno.s6">Oppdatert avsnitt vaksine 22.12.2010.</s>	<s id="NEST_Inf_155en.s6">Paragraph rectification updated the 27th of November 2009.</s> <s id="NEST_Inf_155en.s7">Vaccine paragraph updated the 22nd of December 2010. </s>
<s id="NEST_Infno.s7">Hvert år i perioden desember til april rammes befolkningen på den nordlige halvkule av smittsomme influensaepidemier.</s>	<s id="NEST_Inf_155en.s8">Every year between December and April the people of the northern hemisphere are affected by contagious flu epidemics.</s>
<s id="NEST_Infno.s8">Dette kalles sesonginfluensa.</s>	<s id="NEST_Inf_155en.s9">This is known as seasonal flu.</s>
<s id="NEST_Infno.s9">De vanligste influensatypene som gir epidemier, er type A og B.</s>	<s id="NEST_Inf_155en.s10">The most common epidemic causing influenzas are types A and B.</s>
<s id="NEST_Infno.s10">Nye varianter av type A og B kommer hvert år.</s>	<s id="NEST_Inf_155en.s11">New variations of types A and B emerge every year.</s>
<s id="NEST_Infno.s11">Nye stammer får navn etter stedet hvor de først ble oppdaget, f.eks type A/Sydney.</s>	<s id="NEST_Inf_155en.s12">The new strains are named after the location on which they were discovered, for instance type A/Sydney.</s>
<s id="NEST_Infno.s12">Influensa kommer av det latinske ordet influere – flyte inn.</s>	<s id="NEST_Inf_155en.s13">Influenza derives from the Latin word influentia – influence, inflow.</s>
<s id="NEST_Infno.s13">Spesielt om influensa A(H1N1) – svineinfluensa, se rammen til høyre.</s>	<s id="NEST_Inf_155en.s14">Particular information on influenza A (H1N1) – swine flu, see the section on the right.</s>
<s id="NEST_Infno.s14">Influensa A(H1N1) – svineinfluensa</s>	<s id="NEST_Inf_155en.s15"> Sidebar:</s> <s id="NEST_Inf_155en.s16">Influenza A (H1N1) – swine flu</s>
<s id="NEST_Infno.s15">- Se spørsmål og svar</s>	<s id="NEST_Inf_155en.s17">* See QandA</s>
<s id="NEST_Infno.s16">- Se temaside</s>	<s id="NEST_Inf_155en.s18">* See subject matter</s>
<s id="NEST_Infno.s17">Fugleinfluensa</s>	<s id="NEST_Inf_155en.s19"> Avian Influenza (Bird flu)</s>
<s id="NEST_Infno.s18">Fugle-influensa smitter sjelden til mennesker.</s>	<s id="NEST_Inf_155en.s20">Avian influenza, or bird flu, rarely infect humans.</s>
<s id="NEST_Infno.s19">Men dersom det skjer, og disse menneskene samtidig smittes av vanlig influensa, kan infiserte celler i kroppen produsere en krysning mellom de to virusene.</s>	<s id="NEST_Inf_155en.s21">However, if this would happen, and simultaneously the humans were infected with a common variety of the flu, the affected cells in the body would produce a cross between the two viruses.</s>
<s id="NEST_Infno.s20">Da kan vi teoretisk få et nytt virus som få eller ingen er immune mot.</s>	<s id="NEST_Inf_155en.s22">Theoretically we could get a new type of virus of which few or no one would be immune. </s>
<s id="NEST_Infno.s21">Historie</s>	<s id="NEST_Inf_155en.s23">History</s>
<s id="NEST_Infno.s22">Til sammen 18 verdensomfattende influensaepidemier er kjent fra historien.</s>	<s id="NEST_Inf_155en.s24">In total 18 global flu epidemics are known throughout history.</s>
<s id="NEST_Infno.s23">Den første pandemien ble beskrevet i 1580.</s>	<s id="NEST_Inf_155en.s25">The first pandemic was reported in 1580.</s>
<s id="NEST_Infno.s24">Den største var Spanskesyken i 1918-1919, som førte til 25-40 millioner dødsfall i verden.</s>	<s id="NEST_Inf_155en.s26">The greatest of them was the Spanish Flu in the years 1918-19, which resulted in 25-40 million deaths worldwide.</s>
<s id="NEST_Infno.s25">I Norge døde ca. 15 000 personer.</s>	<s id="NEST_Inf_155en.s27">Approximately 15000 people died in Norway.</s>
<s id="NEST_Infno.s26">De to siste større pandemiene var Asiasyken i 1957 og Hong Kong-syken i 1968.</s>	<s id="NEST_Inf_155en.s28">The two most recent pandemics were the Asian Flu of 1957 and the Hong Kong Flu of 1968. </s>
<s id="NEST_Infno.s27">Influensavirus av type A ble første gang påvist i 1933 og type B i 1940.</s>	<s id="NEST_Inf_155en.s29">The type A virus was first detected in 1933; type B in 1940.</s>
<s id="NEST_Infno.s28">På slutten av 1940-tallet ble den første vaksinen utviklet.</s>	<s id="NEST_Inf_155en.s30">The first vaccine was developed at the end of the 1940s. </s>
<s id="NEST_Infno.s29">Dråpe- og kontaktsmitte</s> <s id="NEST_Infno.s30">Influensa smitter hvis man puster inn dråper med influensavirus fra smittede personer som hoster eller nyser, såkalt nærdråpesmitte.</s>	<s id="NEST_Inf_155en.s31">Infection through direct contact and/or the spread of respiratory droplets Influenza infects if one inhales tiny droplets containing the virus spread through coughing or sneezing.</s> <s id="NEST_Inf_155en.s32">This is known as infection through respiratory droplets.</s>
<s id="NEST_Infno.s31">Man kan også smittes ved direkte kontakt.</s>	<s id="NEST_Inf_155en.s33">One may also get infected through direct contact.</s>
<s id="NEST_Infno.s32">En liten smittedose er nok for å gi sykdom.</s>	<s id="NEST_Inf_155en.s34">One small dose is enough to cause illness.</s>
<s id="NEST_Infno.s33">Inkubasjonstiden fra smitte til symptomer er vanligvis to dager, men varierer fra en til tre dager.</s>	<s id="NEST_Inf_155en.s35">The incubation period between infection and the appearance of symptoms usually lasts for two days, but it varies from one to three days.</s>
<s id="NEST_Infno.s34">Man er smitteførende fra den dagen symptomene viser seg og i tre-fem dager etterpå.</s>	<s id="NEST_Inf_155en.s36">A person is contagious for three to five days, starting with the day the first symptoms emerged.</s>
<s id="NEST_Infno.s35">Når man har gjennomgått influensasykdom med én virusstamme, er man vanligvis immun i mange år etterpå mot denne stammen.</s>	<s id="NEST_Inf_155en.s37">Once you have undergone one type of influenza, you will most likely be immune against this strain.</s>
<s id="NEST_Infno.s36">Man kan også være immun mot lignende stammer, såkalt kryssimmunitet.</s>	<s id="NEST_Inf_155en.s38">It is also possible to be immune against closely related strains, also known as cross-immunity. </s>