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Flu Fever

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Last Updated: 02 July 2021

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The cold and flu are both respiratory infections, but theyre caused by different viruses. Colds can be caused by more than 200 distinct viruses, according to the Centers for Disease Control and Prevention, while there are only a handful of viruses that cause Flu. Flu is usually more intense than common cold, say CDC. Cold symptoms tend to develop gradually, while flu symptoms can come on suddenly, without warning, per the CDC. Learn More About Differences Between Cold and Flu Cold symptoms can differ from person to person, but they generally appear about one to three days after exposure to cold - causing virus. In most cases, cold symptoms will peak within two to three days. Signs that you have a cold usually develop slowly. The most common cold symptoms include fatigue, sore or scratchy throat, nasal congestion or stuffiness, and runny nose, followed by sneezing and coughing. Fever is not typical with cold, but low - grade fever isnt out of the question, according to Merck Manual. Mucus discharged by runny nose may change color over the course of illness, starting out clear and becoming thicker, yellow, or green. Postnasal drip, in which mucus accumulates or drips in the back of the throat, can further aggravate sore throat or cough. Symptoms usually disappear in 4 to 10 days, although cough often lasts into the second week. Colds may last longer or be more severe in people who have chronic health issues. If your symptoms persist for more than 10 days or keep coming back, then something else may be going on, such as allergies, sinusitis, or secondary infection. Fever is an important sign, says Norman Edelman, MD, professor of preventive medicine, internal medicine, physiology, and biophysics at State University of New York at Stony Brook on Long Island. Adults with fever of 102 degrees F or higher and children with fever of 103 degrees F or higher should see a doctor. The contagious period for common cold has its own life span. A cold is most contagious during the first day or two after symptoms develop. Flu symptoms usually start within one to four days after infection. Unlike common cold, effects of influenza virus infection can come on very suddenly. The first signs of flu are often fever or chills, accompanied by headache, sore throat, dry cough, runny nose, muscle aches, and fatigue. As illness progress, person may have warm, flush skin, watery or bloodshot eyes, severe cough that produces phlegm, and nasal congestion. Nausea and vomiting may also occur, especially among children, according to Merck Manual. A Bouts of Flu typically last for several days or occasionally weeks, with severe symptoms subsiding in two to three days. However, weakness, fatigue, dry cough, and reduced ability to exercise can linger for six to eight weeks.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Flu Complications

Influenza, Flu, is a common, very infectious viral infection. Over the years, many people have used the term flu to describe anything from stomach bug to bout of food poisoning, but influenza is a respiratory illness and doesnt have anything to do with the gastrointestinal system - system that runs from your mouth to your rectum. People who are infected with the influenza virus may develop sepsis. Sometimes incorrectly called blood poisoning, sepsis is bodys often deadly response to infection. Sepsis kills and disables millions and requires early suspicion and rapid treatment for survival. Sepsis and septic shock can result from infection anywhere in the body, such as pneumonia, influenza, or urinary tract infections. Worldwide, one - third of people who develop sepsis die. Many who do survive are left with life - changing effects, such as post - traumatic stress disorder, chronic pain and fatigue, organ dysfunction and / or amputations. Doctors have found that rates of sepsis and severe sepsis tend to go up during the so - called Flu season. Influenza and COVID - 19 are two separate viruses, but they both affect the respiratory system. Their initial symptoms can be quite similar: cough, fever, aches and pains. Experts are encouraging people to get their seasonal Flu vaccine sooner than later in 2020 to avoid a so - called twindemic. There are concerns that influenza cases will peak at same time as the second wave of COVID - 19, if one occurs. Fears are two - fold. If you develop symptoms that overlap two infections, doctors will know which one you may have. You will have to undergo COVID - 19 testing and medical staff will have to take necessary precautions until COVID - 19 is ruled out. The second issue is if you get the flu, your immunity drops as your body fights infection. This makes you more vulnerable to catching COVID - 19 if you are exposed to it. It is possible to have both infections at same time. There are different types of influenza. There is annual seasonal influenza and others, such as H1N1 influenza, avian Flu, and swine Flu. There are three separate types of viruses: Type: Type influenza affects both people and animals, such as birds. Animals help spread viruses which can be very serious. Type flus are ones that cause most flu pandemics or epidemics. In 1918, world was hit with Spanish Flu, which killed millions of people. It was feared in 2009 that the H1N1 virus would have similar outcomes. Type B: Type B influenzas do not infect animals and do not cause epidemics or pandemics, but they still can cause serious harm. Type C: Type C influenzas are milder than either types or B. They do not cause epidemics or pandemics and they only affect humans. Viruses that cause influenza are not static, which means they do not stay the same. They can change and mutate, turning into new viruses.


Pneumonia

Pneumonia is an infection of lungs that causes alveoli to become inflamed. This causes symptoms such as cough, fever, shaking, and chills. Pneumonia can develop and become a serious complication of the flu. It can be especially dangerous and even deadly for people in high - risk groups. Seek medical treatment immediately if you have any of the following symptoms: severe cough with large amounts of mucus, trouble breathing, shortness of breath, severe chills or sweating fever higher than 102F That not go away, especially if you also have chills or sweating chest pains. Pneumonia is highly treatable, often with simple home remedies such as sleep and plenty of warm fluids. However, smokers, older adults, and people with heart or lung problems are especially prone to pneumonia - related complications. Pneumonia - related complications include: fluid buildup in and around lungs, bacteria in the bloodstream, acute respiratory distress syndrome

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

What are common cold symptoms?

Cold symptoms usually begin with a sore throat, which usually goes away after a day or two. Nasal symptoms, runny nose, and congestion follow, along with cough by fourth and fifth days. Fever is uncommon in adults, but slight fever is possible. Children are more likely to have fever with cold. With cold symptoms, nose teems with watery nasal secretions for the first few days. Later, these become thicker and darker. Dark mucus is natural and does not usually mean you have developed bacterial infection, such as sinus infection. Several hundred different viruses may cause your cold symptoms.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Continued

Table

SymptomsColdFlu
FeverSometimes, usually mildUsual; higher (100-102 F; occasionally higher, especially in young children); lasts 3 to 4 days
HeadacheOccasionallyCommon
General Aches, PainsSlightUsual; often severe
Fatigue, WeaknessSometimesUsual; can last 2 to 3 weeks
Extreme ExhaustionUnlikelyUsual; at the beginning of the illness
Stuffy NoseCommonSometimes
SneezingUsualSometimes
Sore ThroatCommonSometimes
Chest Discomfort, CoughMild to moderate; hacking coughCommon; can become severe
ComplicationsSinus congestion; middle ear infectionSinusitis, bronchitis, ear infection, pneumonia; can be life-threatening
PreventionWash your hands often; avoid close contact with anyone with a coldWash your hands often; avoid close contact with anyone who has flu symptoms; get the annual flu vaccine
TreatmentDecongestants; pain reliever/fever reducer medicinesDecongestants, pain relievers, or fever reducers are available over the counter; over-the-counter cough and cold medicines should not be given to young children; prescription antiviral drugs for flu may be given in some cases; call your doctor for more information about treatment.

Firstly, COVID - 19 and influenza viruses have similar disease presentation. That is, they both cause respiratory disease, which present a wide range of illnesses from asymptomatic or mild through to severe disease and death. Secondly, both viruses are transmitted by contact, droplets and fomites. As a result, same public health measures, such as hand hygiene and good respiratory etiquette, are important actions all can take to prevent infection. Speed of transmission is an important point of difference between two viruses. Influenza has a shorter median incubation period and shorter serial interval than the COVID - 19 virus. The serial interval for COVID - 19 virus is estimated to be 5 - 6 days, while for the influenza virus, serial interval is 3 days. This means that influenza can spread faster than COVID - 19. Further, transmission in the first 3 - 5 days of illness, or potentially pre - symptomatic transmission - transmission of virus before appearance of symptoms - is major driver of transmission for influenza. In contrast, while we are learning that there are people who can shed COVID - 19 virus 24 - 48 hours prior to symptom onset, at present, this does not appear to be a major driver of transmission. The Reproductive number - the number of secondary infections generated from one infected individual - is understood to be between 2 and 2. 5 for COVID - 19 virus, higher than for influenza. However, estimates for both COVID - 19 and influenza viruses are very context and time - specific, making direct comparisons more difficult. Children are important drivers of influenza virus transmission in the community. For the COVID - 19 virus, initial data indicate that children are less affected than adults and that clinical attack rates in the 0 - 19 age group are low. Further preliminary data from household transmission studies in China suggest that children are infected by adults, rather than vice versa. While the range of symptoms for two viruses is similar, cases with severe disease appear to be different. For COVID - 19, data to date suggest that 80% of infections are mild or asymptomatic, 15% are severe infection, requiring oxygen and 5% are critical infections, requiring ventilation. These fractions of severe and critical infection would be higher than what is observed for influenza infection. Those most at risk for severe influenza infection are children, pregnant women, elderly, those with underlying chronic medical conditions and those who are immunosuppressed. For COVID - 19, our current understanding is that older age and underlying conditions increase the risk for severe infection. Mortality for COVID - 19 appears higher than for influenza, especially seasonal influenza. While the true mortality of COVID - 19 will take some time to fully understand, data we have so far indicate that the crude mortality ratio is between 3 - 4%, and the infection mortality rate will be lower. For seasonal influenza, mortality is usually well below 0. 1%. However, mortality is to a large extent determined by access to and quality of health care.


Distinguishing Flu From the Common Cold

Influenza, or flu, is a viral infection that attacks the lungs, nose, and throat. It is a contagious respiratory illness with symptoms ranging from mild to severe. Flu and common cold have similar symptoms. It can be difficult to distinguish between two illnesses. In most cases, flu symptoms are more severe and last longer than common cold. Anyone can become sick with the flu, but some people have a higher risk of infection. This includes children under the age of 5 and adults aged 65 and older. The risk of flu also increases if you have a weakened immune system or chronic condition, such as:

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Colds and the flu treatment

Common Cold and Flu may seem very similar at first. They are indeed both respiratory illnesses and can cause similar symptoms. However, different viruses cause these two conditions, and your symptoms will gradually help you differentiate between them. Both cold and flu share a few common symptoms. People with either illness often experience: runny or stuffy nose, sneezing body ache general fatigue. As a rule, flu symptoms are more severe than cold symptoms. Another distinct difference between the two is how serious they are. Colds rarely cause additional health conditions or problems. Flu, however, can lead to sinus and ear infections, pneumonia, and sepsis. To determine whether your symptoms are from cold or from the flu, you need to see your doctor. Your doctor will run tests that can help determine what is behind your symptoms. If your doctor diagnoses a cold, you likely only need to treat your symptoms until the virus has had a chance to run its course. These treatments can include using over - counter cold medications, staying hydrate, and getting plenty of rest. If you have the flu, you may benefit from taking OTC Flu Medicine early in the virus cycle. Rest and hydration are also very beneficial for people with flu. Much like common cold, flu just needs time to work its way through your body. If you think youre experiencing flu symptoms, learn more about the flu


Symptoms of Colds and Flu

Flu and cold viruses are spread mainly by droplets, when infected people cough, sneeze, or talk. You also can get infected by touching surface or object that has flu viruses on it, such as a door handle, and then touching your eyes, nose, or mouth. Flu season in the United States May begins as early as October and can last as late as May, and generally peaks between December and February. Check with your health care provider promptly if you are at high risk for flu - related complications and you have flu symptoms or if you have flu symptoms that do not improve. People at high risk include: children younger than 5 years, but especially those younger than age 2. Pregnant women, people with certain chronic health conditions, people aged 65 or older

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Home treatments

Here are some things you can do at home to feel better when you have a cold or flu: Drink plenty of clear liquids, including water and juice. Drink 8 ounces every 2 hours. If you smoke, quit. Stay away from others who smoke. It irritates your lungs and causes dry, hacking cough. For help to quit smoking, see our resources to quit tobacco. Get plenty of rest. Take acetaminophen, aspirin, or ibuprofen if you are uncomfortable. Drink warm, clear liquids such as tea, soup, or water. Spicy foods might also help relieve congestion. Use a vaporizer or breathe moist, warm air from a hot shower. Wash mucus out of your nasal passages with a saline solution. Take decongestant pills or use decongestant Nasal spray. We don't recommend bulb syringe for rinsing Nasal passages, as bacteria can be left in the bulb even after rinsing. If you use neti pot, it must be cleaned thoroughly every time you use it. To make saline solution, dissolve 1 / 4 teaspoons of salt and pinch of baking soda in 1 cup of warm water.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

When to call your doctor

When you have flu, one choice looms large in front of your feverish eyes: Should you drag your aching body out in the cold to go to the doctor or hospital, or should you just wrap yourself in blankets, drink fluids and stay put? For sick people, there's no downside to going to hospital or seeking care from a professional, says Dr. Amesh Adalja, infectious - Disease specialist and senior scholar at Johns Hopkins Center for Health Security. Antiviral drugs that can help people with the flu work better if they are prescribed early on, he say. In deciding whether to head to the doctor's office or hospital, main symptom that people should watch for is shortness of breath, Adalja Tell Live Science. When someone is unable to breathe normally, that's sign the flu may be progressing to pneumonia, and the person should definitely seek care, he say. Having difficulty breathing means that the infection has moved downward. Usually, influenza viruses infect the upper part of the respiratory tract, for example, bronchi, he say. If infection moves down into the lungs and causes pneumonia, patient can get worse very quickly. Another sign of a particularly severe case of flu that needs treatment is unrelenting fever, Adalja say. If a person has a temperature of 101 degrees Fahrenheit or higher, and fever does not get better after taking acetaminophen or another over - counter medicine, then that person should see a doctor. Fevers raise the heart rate, which takes a toll on the body, he say. Fevers can also make people feel especially miserable, so seek care if you feel that you cannot cope with your fever, he say. The third reason to go to the doctor is the feeling of complete fatigue, to the point of being unable to do anything, and being completely confined to bed, he say. Some groups of people are at higher risk of developing pneumonia or other complications from the flu, Adalja say. For example, pregnant women, people who have had organ transplants and cancer patients who are undergoing chemotherapy should strongly consider seeking care at earliest signs of illness. In addition, people caring for young children or older adults should take them for treatment if they suspect the flu. Children under 6 months old, frail older adults and people with respiratory conditions such as severe asthma are at especially high risk of developing pneumonia during flu infection, he say. Doctors worry about pneumonia developing in flu patients because pneumonia impairs the lungs ' ability to function, and the body may not be able to get enough oxygen. In severe cases, flu patients may develop severe breathing problems called respiratory distress and need to be hospitalized and put on mechanical ventilator, he say. People with flu who choose to stay home should keep track of their symptoms. Make sure you are getting better, Adalja say.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

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Timeline and symptoms

Early symptoms of flu will come on abruptly and hang around for the first five days, or so, before you start to feel better. Flu typically lasts one to two weeks. If symptoms are getting worse after the first week, you should consider consulting a doctor, especially if you have pre - existing health condition like asthma or diabetes. This article was reviewed by Tania Elliott, MD, who specializes in infectious diseases related to allergies and immunology for internal medicine at NYU Langone Health. Visit Insider's homepage for more stories. Flu season in the US kicks off in October and lasts through May. While many healthy adults may be inconvenienced by flu, everyone should know what to watch for and when to head to the doctor if symptoms persist or worsen.


Flu

Most adults will be able to infect other people up to seven days after becoming sick, so the best way to avoid spreading the flu is to stay at home while you are unwell. In particular, avoid going to work or school or visiting busy public places. Avoid sharing linens, eating utensils and dishes. Perform good cough etiquette at all times. This includes coughing into tissue and disposing of it immediately, or coughing into your sleeve. Good hand hygiene is also important. Wash your hands regularly using soap and water, particularly if you cough into your hands.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Summary

Table

Signs and SymptomsInfluenzaCold
Symptom onsetAbruptGradual
FeverUsual; lasts 3-4 daysRare
AchesUsual; often severeSlight
ChillsFairly commonUncommon
Fatigue, weaknessUsualSometimes
SneezingSometimesCommon
Stuffy noseSometimesCommon
Sore throatSometimesCommon
Chest discomfort, coughCommon; can be severeMild to moderate; hacking cough
HeadacheCommonRare

Most people who get the flu will have symptoms that last between 3 and 7 days. If they develop complications, they may be ill for longer. Thousands of people die from the flu every year. Children, older adults, or people with compromised immune systems are much more vulnerable to flu complications. People should take the flu seriously by resting and avoiding public places until their symptoms disappear. With rest and medical care, it is possible to recover even from serious complications. Anyone with severe flu symptoms should see a doctor. To reduce the risk of getting the flu again, people can get flu shot every year.


Flu vaccine

Annual influenza vaccination can prevent most of the illnesses and death that influenza causes. Cdc's current Advisory Committee on Immunization Practices issues recommendations for everyone 6 months of age and older, who do not have any contraindications to vaccination, to receive flu vaccine each year. The flu vaccine is specifically recommended for those who are at high risk of developing serious complications from influenza infection. Other simple hygiene methods can reduce or prevent some individuals from getting the flu. For example, avoiding kissing, handshakes, and sharing drinks or food with infected people and avoiding touching surfaces like sinks and other items handled by individuals with flu are good preventive measures. Washing one's hands with soap and water or by using alcohol - based hand sanitizer frequently during the day may help prevent infection. Individuals with flu should avoid coughing or sneezing on uninfected people; quick hugs are probably okay as long as there is no contact with mucosal surfaces and / or droplets that may contain the virus. Wearing a mask may help reduce your chances of getting the disease, and if you unknowingly or know you have infection, helps to reduce spreading it to others.


What other problems can the flu cause?

Flu is caused by the influenza virus. Common classes of influenza virus are type and type B, each of which includes several subtypes or strains. Type is usually responsible for annual outbreaks that typically occur in late fall and early winter. Influenza viruses change often, so having flu caused by one strain does not give you full immunity to other strains. Widespread outbreaks of flu usually follow significant changes in virus and occur about every 10 years. People who get the flu tend to become much sicker when shifts in flu virus occur. Minor changes in viruses occur nearly every year. Direct contact, such as shaking hands. Small droplets that form when a person sneezes or coughs. Contact with objects such as handkerchiefs that have been in contact with fluids from an infected person's nose or throat.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Influenza (Flu) in Children

Influenza is a highly contagious viral respiratory illness occurring in annual outbreaks, usually during the winter season. Navigating Flu Season Now more than ever in time of COVID - 19, health of every family member is crucial. Get resources to keep kids safe and healthy this Flu Season, including convenient flu shot appointments. The most common symptoms of flu are: Fever, muscle aches, sore throat, nonproductive cough. Influenza causes illness in people of all ages. Although most people, including children, have self - limited, uncomplicated illnesses lasting less than a week, some have more serious illnesses and may need to be hospitalize. Influenza may also lead to pneumonia or death.


Key points about the flu in children

Influenza is a very contagious viral infection of the respiratory system. It causes high fever, body aches, cough, and other symptoms. Most children are ill with the flu for less than a week. But some children have more serious illnesses and may need to be treated in hospital. Flu may also lead to lung infection or death. Flu may be treated with acetaminophen, cough medicine, and antiviral medicine. Your child will also need lots of rest and plenty of fluids. The best way to prevent the flu is to have a yearly flu vaccine. Because viruses change, researchers create a new flu vaccine each year to help protect against strains of virus that are currently active. Vaccine is advised for all children 6 months and older.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

1. Sudden or excessive fatigue

Table

COVID-19FluAllergies
Incubation period: 1-14 daysIncubation period: 1-4 daysIncubation period: n/a
Common symptoms: Fever Dry cough Shortness of breath Difficulty breathing Fatigue Sometimes: Runny or stuffy nose Body aches Sore throat Chills/shaking New loss of taste or smellCommon symptoms: Fever/chills Cough Sore throat Fatigue Body aches Headache Loss of appetite Sometimes: Runny or stuffy noseCommon symptoms: Sneezing Congestion Runny or stuffy nose Itchy/watery eyes Allergy symptoms typically only affect parts of the head are not accompanied by fever.

As days get shorter and the weather turns colder, it is common for people to feel more tired. These normal seasonal changes can disrupt circadian rhythms and even lead to a form of depression called seasonal affective disorder, or simply autumn fatigue. Sad is a real disorder that affects 1 - 10 percent of the population. Its symptoms include tiredness, low energy, difficulty concentrating, and feelings of sluggishness. So it is no wonder that lack of energy, which can be an early warning sign for FLU, is often dismissed as just a normal part of the season. But lack of energy or general fatigue at this time of year is not always related to SAD. In fact, it could be an early warning sign for FLU. Additional early warning signs for FLU include aches, chills, sore throat, cough, and fever. If your fatigue is accompanied by any of these other symptoms, you may be suffering from FLU. If your fatigue or tiredness has comes on suddenly and is felt to an excessive degree, it is unlikely to be SAD, and FLU test might be a good idea.


Flu symptoms in children

Flu viruses also cause the above symptoms in children. However, your child may have other symptoms that require medical attention. These can include: not drinking enough fluids, crying with no tears, not waking up or interacting being unable to eat, having fever with rash, having difficulty urinating. It can be hard to know the difference between flu and cold in children. With both cold and flu, your child can develop cough, sore throat, and body aches. Symptoms are typically more severe with the flu. If your child doesnt have high fever or other severe symptoms, this may be an indication that they have a cold instead. If youre concerned about any symptoms your child has develop, you should call their pediatrician.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Sources

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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