Details On The Signs And Symptoms Of Flu; Knowing More About The Signs And Symptoms Of Flu. Flu is an infection with influenza viruses. Already one day after infection, the first symptoms of the disease can appear and the pathogens are contagious for about one week.
Flu is a sudden, feverish disease. Since it breaks out more frequently in winter, it is also called “seasonal flu. The flu can also be described as an acute respiratory disease. It is extremely serious, as in the worst case it can become life-threatening.
How do you become infected and how long is infectious?
People are infected with flu mostly by droplet infection. This can happen, for example, when a sick person sneezes and others inhale the droplets. Influenza viruses can survive up to several hours outside the body, and even longer at low temperatures. If the hands come into contact with objects containing virus-containing secretions (for example, doorknobs) and if they are subsequently gripped against the nose or other mucous membranes, infection is also possible.
Patients are contagious for at least five to seven days from the onset of the first symptoms. Sometimes, even before the onset of the first symptoms or longer than a week, those affected are infectious.
Risk factors On The Signs And Symptoms Of Flu
There are a number of factors that promote flu and especially complications. For example:
- • pregnancy
- • Diabetes and other metabolic diseases
- • tumor diseases
- • Age over 65 years, here the immune system is not responding so well to new pathogens
- • Age of less than a year, here the immune system is still immature and does not respond as effectively
- • Chronic lung diseases such as asthma, pulmonary emphysema, chronic bronchitis, cystic fibrosis
- • Chronic heart disease
- • HIV disease
- • Suppression of the immune system in the course of medical treatment
- • malnutrition
Symptoms Of Flu
Often you would not even realize that you have the flu: In 80 percent of cases, the infection with influenza goes unnoticed or just like a cold. According to estimates by the World Health Organization (WHO), 10 to 20 percent of the world’s population is affected each year, but the majority of them do not notice it.
The remaining 20 percent of those infected are more severe. The symptoms usually appear suddenly and sometimes one to two days after the infection. The infection begins with shivering and a strong sense of illness. This can cause fever and body temperature of up to 40 degrees; Sore throat, dry cough, watery eyes, a runny nose, nausea, headache and body aches are also possible. If no complications occur, the infection is usually over after a period of a few days to a week.
But the flu also makes us more susceptible to bacteria. If the immune system is weakened by the virus infection, other pathogens have an easy time. Most influenza-related deaths are not due to the virus itself, but to bacterial infections that have become influenza-related (called secondary infections).
These bacterial diseases can include lung, ears or heart muscle inflammation. They can each cause different symptoms and should be treated promptly.
What are the typical signs and symptoms of flu ?
The course and severity of influenza can vary greatly from case to case. If no complications occur, the symptoms usually last for about 5 to a maximum of 7 days. The course of the disease can range from symptom-free to death.
In severe cases, pneumonia, inflammation of the brain and heart muscle can occur. In children, complications can also develop in the form of middle ear infections.
Typical first flu symptoms:
- • Strong disease feeling
- • Sudden onset of high fever
- • Sore throat
- • Cough
- • Common cold, runny nose
In addition, virus infection often causes the following symptoms:
- • Shivering
- • Severe headaches, muscle, back and body aches
- • Pain behind the sternum
- • Huskiness
- • Shortness of breath
- • Queasiness
- • Anorexia
- • Severe fatigue
However, many other, mostly viral respiratory pathogens can cause some of these symptoms. Especially at first you can easily confuse the flu with a common cold, for the majority of viruses are responsible. The difference between influenza and common cold usually manifests itself in the course and severity of the illness. Depending on a pre-existing immunity, underlying diseases but also of the individual constitution, not all influenza-infected people get the typical symptoms.
The high fever usually lasts 3 to 4 days. A renewed increase in fever may indicate the onset of an additional bacterial infection (superinfection) of the respiratory tract. The disease duration is usually 5 to 7 days, but in individual cases may be significantly longer, especially for complications and risk factors, The tormenting cough does not stop for weeks.
Some patients still suffer from pronounced general weakness, loss of appetite, feeling unwell, depression, weeks after the onset of influenza. Serious complications occur only in a small proportion of all infected people, but given the very large number of people suffering from the annual flu season, they are still relatively common.
What is the typical cause?
First of all, the Signs And Symptoms Of Flu are similar to those of a cold. Large differences only become apparent during the course of the disease and in the severity of the disease. The first indicator of the real flu is the sudden and violent onset, which is by no means creeping. Several symptoms occur simultaneously and intensively, while signs of a cold develop gradually. Influenza quickly leads to a typical symptom: high fever, which can reach a temperature of 39 to 41 degrees Celsius and persists for days. The pulse is faster, sweating, increased breathing, shiny eyes, dizziness, perceptual disorders, and confusion.
Furthermore, the fever can cause cramps. One possible therapy, after consultation with the doctor, is treatment with drugs that can reduce the fever. Furthermore, the weakened immune system of influenza patients promotes the development of bacterial infections. This can lead to complications, especially for older people. Inflammation of the nervous system and pneumonia are possible consequences.
How long is infection possible?
The virus infection is already contagious during the incubation period, i.e. the period between infection and onset of a disease. The incubation period for influenza is a few hours to three days. After the outbreak of influenza, there is a risk of infection for about three to five days. Children can even spread the virus for up to seven days after the first symptoms appear.
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