The michigan department of health and human services mdhhs seasonal influenza is a contagious respiratory illness caused by influenza viruses. Ah1n1v than with seasonal flu see green book chapter 19. It is difficult for an individual to develop long term immunity to influenza as the make up of the viral strains change slightly on a regular basis. Symptoms of flu include fever usually high 100 degrees f or more, headache, extreme tiredness, dry cough, sore throat, runny or stuffy nose, and muscle aches. These viruses invade the respiratory tract, or the nose, throat and lungs, and are spread from one person to another by coughing. What we know about seasonal influenza in oregon, seasonal influenza often peaks in january to march. Uncomplicated seasonal influenza disease presents as rapid onset of the following combination of systemic and respiratory symptoms. More information about clinical risk groups and vaccination can be found in the influenza green book chapter 19 and nice national institute for health and care excellence guidance. Dec 21, 2018 type a influenza is a contagious viral infection that can have lifethreatening complications if left untreated. The image above shows the lungs of a mouse after a severe case of h1n1 influenza infection, a common type of seasonal flu. Influenza, commonly known as the flu, is an infectious disease caused by an influenza virus. Influenza a symptoms can be confused with signs of other conditions but are usually.
Prevention of seasonal influenza centre for health. Healthcare practitioners should refer to the green book influenza chapter for further detail. The flu chapter of the green book has been updated to reflect the latest guidance from the joint committee on vaccination and immunisation in readiness. This course provides a general introduction to the disease and is intended for personnel involved in seasonal influenza outbreak preparedness and response. Seasonal influenza, a respiratory infection caused by the influenza virus is a significant cause of morbidity and mortality, especially in individuals who are at the extremes of age, pregnant, immune compromised, or have chronic underlying disease 1,2. Fatigue tiredness some people may have vomiting and diarrhea, though this is more common in children than adults.
Change to the niac guidelines for treatment of anaphylaxis october 2015. Influenza a symptoms can be confused with signs of. A series of questions and answers has been developed in response to some frequently asked questions. Sometimes the vaccine may make your symptoms a little worse, but this. This page provides resources about flu symptoms, complications, and diagnosis. Further information on influenza infection is included in the green book influenza chapter and on nhs. Influenza also known as flu is a contagious respiratory illness caused by influenza viruses. Seasonal flu can cause serious illness and even death, and it poses a risk for people with weak immune systems. The flu vaccine is available from october 2019 until end of april 2020. In previous years, flu activity has been the highest from late december through early march.
Seasonal influenza influenza commonly known as flu is viral infection that affects the respiratory system. So vaccination against seasonal influenza has to be undertaken annually. Influenza is usually self limiting in healthy individuals, with recovery in 37 days. Dec 25, 2017 the reason why the flu is seasonal is because virus transmission is favored by specific weather conditions. Influenza occurs as pandemics, epidemics and sporadic seasonal cases. Governmentfunded influenza vaccines will start to become available from midapril 2019. The purpose of the influenza vaccination programme is to protect those most at risk of developing severe disease or complications or from dying if they develop the infection. The symptoms of influenza flu appear suddenly and often include. Uncomplicated influenza signs and symptoms include. Influenza april 2019 19 influenza the disease influenza is an acute viral infection of the respiratory tract. This treatment summary topic describes influenza vaccine. Additionally, aerosol transmission plays a part in influenza virus transmission. Influenza testing is not needed for all patients with signs and symptoms of. Studies show cold temperatures better conserve the flu virus on surfaces while the dry air favors its transmission as well as damages nasal mucous membranes, allowing influenza viruses to cause an infection more easily.
Mdhhs clinical signs, symptoms, and complications of. Influenza is an acute viral infection of the respiratory tract that spreads easily from person to person. The disease is characterised by the sudden onset of fever, chills, headache, myalgia and extreme fatigue. Like seasonal flu, infection with influenza ah1n1v may be subclinical or cause an unpleasant but selflimiting disease. Elderly people, children under 6 months old, pregnant women, and people with chronic conditions or immunosuppression are at increased risk of complications. Those littleknown cells display the very same chemicalsensing surface proteins found on the tongue, where they allow us to sense bitterness. Influenza flu is a virus that typically affects the nose, throat, and lungs. Green phlegm sputum does not necessarily mean that you have a secondary chest infection. There is a marked seasonal variation in meningococcal disease, with peak levels in the winter months declining to low levels by late summer. Seasonal flu influenza is an infection caused by a virus that can affect your nose, throat and lungs.
Annual national flu programme letter 2019 to 2020 nhs england. Both can cause mild to severe illness with symptoms including fever, sore throat, runny nose, muscle aches, headache, coughing and general fatigue. It can cause mild to severe illness, and at times can lead to death. Signs and symptoms classic symptoms of influenza are the sudden onset of fever, chills, headache, cough usually dry. Influenza chapter of the green book can be found at. Serious outcomes of infection can result in hospitalization or death.
Seasonal influenza is a preventable infectious disease with mostly respiratory symptoms. Seasonal flu vaccination will the seasonal flu vaccine give 100% protection. Englishfrench seasonal influenza is an acute viral disease of the respiratory tract transmitted via aerosols or contaminated surfaces from infected people. It is caused by influenza virus and is easily transmitted, predominantly via the droplet and contact routes and by indirect spread from respiratory secretions on hands, tissues, etc. This course provides a general introduction to the disease and is intended for personnel involved in seasonal influenza outbreak preparedness and.
The flu, also called influenza, is a respiratory infection caused by viruses. Influenza is a highly infectious, viral infection of the respiratory tract. Symptoms were similar to those of seasonal influenza, although gastrointestinal symptoms vomiting and diarrhoea were more commonly reported than is usual. Seasonal influenza vaccination 2020 immunisation programs. Fever is usually continuous, but it may come and go. Symptoms common symptoms of the flu usually appear suddenly and. Peak levels generally occur between late december and early march. Type a influenza is a contagious viral infection that can have lifethreatening complications if left untreated. Even healthy children and adults can get very sick from the flu and spread it to others. Mdhhs clinical signs, symptoms, and complications of influenza. Inactivated influenza vaccine information for healthcare practitioners.
The 6 principles for beating seasonal flu in 2018 part 1 of 3. Influenza, one of the most common infectious diseases, is a highly contagious airborne disease that occurs in seasonal epidemics and manifests as an acute febrile illness with variable degrees of systemic symptoms, ranging from mild fatigue to respiratory failure and death. Additionally, aerosol transmission plays a part in influenza virus. Illness usually lasts for 2 to 7 days, but complete recovery may take longer.
The illness usually lasts between three and seven days and symptoms include fever, headache, cough, aches and sore throat. Influenza presents with symptoms appearing around 2 days after exposure. The reason why the flu is seasonal is because virus transmission is favored by specific weather conditions. Hps website green book chapter on influenza updated. Mar 20, 20 the flu chapter of the green book has been updated to reflect the latest guidance from the joint committee on vaccination and immunisation in readiness for the 2015 to 2016 influenza season. But it can also be serious or even deadly, especially for people over 65, newborn babies, and people with certain chronic illnesses. Fluad influenza virus vaccine, surface antigen, inactivated, adjuvanted with mf59c. The flu chapter of the green book has been updated to reflect the latest guidance from the joint committee on vaccination and immunisation in readiness for the 2015 to 2016 influenza season. Each year, millions of americans get sick with the flu. Seasonal influenza adult patients diagnosis respiratory virus testing should be considered in individuals presenting during influenza season with fever and influenza like symptoms of myalgia, arthralgia, headache, andor sore throat. Flu flu symptoms stomach flu influenza medlineplus.
Influenza the flu is a contagious respiratory illness caused by influenza viruses. The mdhhs seasonal influenza web page has information on influenza activity, influenza vaccination, and resources for specific groups including health. The median duration of illness is estimated at seven days, with a further 25 per cent of people needing up to ten calendar days to recover and 25 per cent of. These symptoms typically begin two days after exposure to the virus and most last less than a week. Annual seasonal influenza vaccination is recommended for any person aged 6 months and over who wishes to reduce the likelihood of becoming ill with influenza. Other common symptoms include a dry cough, sore throat and stuffy nose.
Green book 3 and in the annual flu letter for 2018192. Flu is most common during the fall and winter months. The government resource immunisation against infectious disease the green book. Influenza is an acute infectious disease of viral etiology which, unlike the common cold, can lead to serious complications such as pneumonia, myocarditis, inflammation of the kidneys, nervous. Jan 02, 2020 the pages listed below offer public health and health care professionals key information about vaccination, infection control, prevention, treatment, and diagnosis of seasonal influenza. Overview and map of current influenza activity in the u. The influenza ah1n1v pandemic caused higher rates of illness in children and young adults and lower rates of illness in adults aged 60 years and older when compared with seasonal influenza writing committee of the who consultation on clinical aspects of pandemic h1n1 2009 influenza, 2010. Seasonal influenza adult patients diagnosis respiratory virus testing should be considered in individuals presenting during influenza season with fever and influenzalike symptoms of myalgia, arthralgia, headache, andor sore throat. The influenza a and b viruses that routinely spread in people are responsible for seasonal flu epidemics each year. The mdhhs seasonal influenza web page has information on influenza activity, influenza vaccination, and resources for specific groups including health professionals and clinical laboratories. In the uk, people usually get seasonal flu between december and march, although outbreaks can happen as early as october and as late as may. The seasonal flu influenza can cause severe illness or complications. Influenza vaccination formulary recommendations 1819 nhs.
Fever may be lower in older adults than in children and younger adults. The green book influenza chapter for further information on indications for influenza vaccine. Notice the oddball cells green known as solitary chemosensory cells sccs. The recent updates include changes to the asthma and egg allergy sections and added information on newly licensed influenza vaccines. Lack of sunshine and low vitamin d intake during winter as well as. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications. Influenza types a and b are responsible for most cases of clinical illness in the uk. Any member of the uk public can report flulike symptoms they may experience. Influenza vaccine treatment summary bnf content published by. It occurs every year, typically in the fall and winter. Influenza occurs as pandemics, epidemics and sporadicseasonal cases. If, however, you have symptoms of influenza and are in a high risk group including young children, people over 65 years of age or people with chronic medical conditions, or are very sick or worried about your illness, contact your doctor or health care provider.
This reflects current jcvi advice and green book guidance on the basis of. Influenza causes significant loss of workdays, human suffering, and m. Symptoms last for around a week and often make you too unwell to go to work or carry out normal daily activities. Seasonal influenza, also known as the flu, is an illness that is caused by viruses. Coverage data and past trends of flu vaccination coverage in the u. Fluad pediatric is intended for use in the pediatric population of 6 months to less than 2 years of age.
Every flu season is different, and influenza can affect people differently. Seasonal influenza influenza is a highly infectious, viral infection of the respiratory tract. Certain groups of people have a higher risk of developing serious health conditions from the flu. Flu can infect people all year round but is more common in the winter months. Symptoms common symptoms of the flu usually appear suddenly and may include dry cough extreme tiredness fever headache. People tend to get it around the same time every year. Seasonal influenza seasonal influenza is an acute illness of the respiratory tract caused by influenza viruses it is usually more common in periods from january to marchapril and from july to august in hong kong three types of seasonal influenza viruses are recognised to cause human infection, namely a, b and c. Influenza a and influenza b are responsible for most clinical illness. Influenza is an acute viral infection of the respiratory tract. Immunisation against infectious diseases the green book influenza. People who are sick with flu often feel some or all of these symptoms. An influenza pandemic is an epidemic of an influenza virus that spreads on a worldwide scale and infects a large proportion of the human population.
Seasonal flu is a respiratory illness which spreads easily from person to person. Prevention of seasonal influenza centre for health protection. Influenza immunisation information including updates for public health professionals. Flu season is upon us again so weve answered to all of your important. The current recommendations for seasonal influenza vaccine in the influenza chapter of the green book. Inactivated influenza vaccine information for healthcare. However, seasonal flu is usually not severe in most people, because they are already partly protected by having had a similar flu virus before. For more information on typical symptoms of influenza. In the united states, seasonal flu activity begins to increase as early as october or november. In the united kingdom immunisation for influenza for certain groups.
Seasonal influenza seasonal influenza is an acute illness of the respiratory tract caused by influenza viruses it is usually more common in periods from january to marchapril and from july to august in hong kong three types of seasonal influenza viruses are recognised to cause human infection, namely a. The pages listed below offer public health and health care professionals key information about vaccination, infection control, prevention, treatment, and diagnosis of seasonal influenza. Seasonal influenza vaccination programme 20192020 hse. Influenza is highly infectious with a usual incubation period of one to three days. The symptoms to look out for that may indicate a secondary chest infection include.
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