Having a high fever doesn’t equal to influenza!

Many people have some knowledge of influenza that happens every year, because a lot of information on preventive methods, treatment methods and etc. are made available. However people are very often mistaken about the relation between influenza and having a fever. Although the image that influenza must accompany a rapid fever rise is prevailing, it isn’t necessarily correct that “without a high fever, it is not influenza”. Among the patients with a slight fever on the 37 degrees level or the 36 degrees that is about the same level as normal temperature, many cases of confirmed influenza have been reported every year. To the contrary, there seem to be cases that, even though having a high fever, they can’t be influenza but the other diseases like a cold.

There are also wrong understandings that having vaccination one will never get infected with influenza as well as the wrong perceptions, many people have, of “influenza should always accompany a high fever”. Vaccination is to expect the effects of making immune system strong. It is to induce the antibodies multiplication by injecting into body viruses whose toxicity is removed. However, because antibodies multiplication varies depending on individual, when the virus power is strong, sometimes one may get infected with influenza. In those cases, it is also well expected that the symptom deterioration can be avoided because the vaccination has given some higher immunity. Vaccination itself can’t prevent all the influenza but it’s safe to say it is effective in avoiding symptom’s getting more serious.

Some of them that only had light symptoms thanks to vaccination, when infected with influenza, might think they themselves had high immunity and strong bodies against diseases, but it is wrong. As the matter of fact, having symptoms of fever and/or pain etc. are evidences that show body immune system is well working for combatting invading viruses. In other words, the stronger immune system one has against viruses, the severer the symptoms of influenza tend to be. On the contrary, elders and children whose immune system is not so strong, if infected with influenza they might have light symptoms and no high fever. However, because the viruses still continue severe activities inside the body, there are many cases where symptoms become more severe and pneumonia or encephalopathy etc. emerges. When elders and children suffer from influenza, without being confused by the lightness of appeared symptoms, do not loose cautious attentions, and it is very important to give them thorough treatments. There are also other cases, other than elders and children, that one has weak immunity from his own constitution or that his immunity has deteriorated from some diseases without his noticing etc., it is likely there are 20 % adults of influenza who may not have a high fever.