2024 Flu aandb

Aug 15, 2022 · The flu is caused by an influenza virus. Most people get the flu when they breathe in tiny airborne droplets from the coughs or sneezes of someone who has the flu. You can also catch the flu if you touch something with the virus on it, and then touch your mouth, nose, or eyes. People often confuse colds and flu. . Www..t mobilesettlement.com

Influenza A and B: None: None: NPS in VTM: 3.5 hr: Moderate: Luminex: Verigene Respiratory Virus Nucleic Acid Test Plus: Verigene SP: Influenza A and B: H1, H1pdm09, H3: Respiratory Syncytial Virus (A, B) NPS in VTM: 3.5 hr: Moderate: Luminex: Verigene RP Flex: VERIGENE Reader VERIGENE Processor SP: Influenza A and B: H1/H1pdm09, H3serious flu complications. There are two main types of . influenza viruses: types A and B. Both type A and B . influenza viruses regularly spread in people, and are . responsible for seasonal flu ... Performance characteristics for influenza A and B were established during February through March 2011 when influenza viruses A/California/7/2009 (2009 H1N1), A/Perth/16/2009 (H3N2), and B/Brisbane/60/2008 (Victoria-Like) were the predominant influenza viruses in circulation according to the Morbidity and Mortality Weekly Oct 9, 2020 · Influenza outbreaks are seen every year during the colder months of the year. Until now, four influenza pandemics have been reported, including the H1N1 (1918), the H2N2 (1957), the H3N2 (1967) and the H1N1 pandemic in 2009. 1 In addition, seasonal flu is reporting in different countries every year. Influenza mortality is associated with age ... serious flu complications. There are two main types of . influenza viruses: types A and B. Both type A and B . influenza viruses regularly spread in people, and are . responsible for seasonal flu ... May 28, 2009 · Influenza A viruses infect a range of mammalian (e.g. pigs and horses) and avian species, whereas type B and C infections are largely restricted to humans. Only types A and B cause human disease of any concern. All of the currently identified 16 HA and 9 NA subtypes of influenza A viruses are maintained in wild, aquatic bird populations. For influenza A and influenza B viruses, selective amplification of target nucleic acid from the sample is achieved by the use of target-specific forward and reverse Dec 22, 2020 · Influenza A and B also have the same chances of complications from the flu, including a potential risk of death. (Beware of these deadly flu signs.) How are influenza A and B transmitted? Like SARS-CoV-2, the virus that causes Covid-19, both flu A and B spread from person to person, up to a distance of about six feet. Influenza types A and B. These 2 types of viruses cause widespread illness (epidemics) almost every winter. They often lead to more people needing to go to the hospital, and more people dying from the flu. Public health officials focus on stopping the spread of types A and B. One of the reasons the flu remains a problem is because the viruses ...Influenza A and B: A(H1), A(H1)pdm09, A(H3) SARS-CoV-2, Adenovirus, Coronavirus 229E, Coronavirus HKU1, Coronavirus NL63, Coronavirus OC43, Human Metapneumovirus, Human Rhinovirus/Enterovirus, Parainfluenza Virus 1, Parainfluenza Virus 2, Parainfluenza Virus 3, Parainfluenza Virus 4, Respiratory Syncytial Virus: NPS: Approximately 45 minutes ... for influenza A and B were not re-established with the modified device and may vary from previous performance. Performance characteristics may vary against other emerging influenza viruses. If ...Print. The Centers for Disease Control and Prevention (CDC) recognizes that school administrators, teachers, staff, and parents are concerned about influenza (flu), particularly its effects on children. Educators and staff can help slow the spread of respiratory illnesses, including flu. On this page, you will find information on preventing the ...For influenza A and influenza B viruses, selective amplification of target nucleic acid from the sample is achieved by the use of target-specific forward and reverse Overview. Influenza virus testing is not required to make a clinical diagnosis of influenza in outpatients with suspected influenza, particularly during increased influenza activity when seasonal influenza A and B viruses are circulating in the local community. However, influenza virus testing can inform clinical management when the results may ... Influenza types A and B. These 2 types of viruses cause widespread illness (epidemics) almost every winter. They often lead to more people needing to go to the hospital, and more people dying from the flu. Public health officials focus on stopping the spread of types A and B. One of the reasons the flu remains a problem is because the viruses ... Influenza A and B: None: None: NPS in VTM: 3.5 hr: Moderate: Luminex: Verigene Respiratory Virus Nucleic Acid Test Plus: Verigene SP: Influenza A and B: H1, H1pdm09, H3: Respiratory Syncytial Virus (A, B) NPS in VTM: 3.5 hr: Moderate: Luminex: Verigene RP Flex: VERIGENE Reader VERIGENE Processor SP: Influenza A and B: H1/H1pdm09, H3 The last time the state saw a significant wave of influenza B was in 2019, when 12,950 cases of influenza B were recorded. In 2020, 720 notifications of influenza B were made. There were 57 in ...As fears of a "tripledemic" die down, health officials say they are seeing an uptick of a particular strain of the flu: influenza B. According to data from the Centers for Disease Control and ...Types Symptoms Comparison Treatment Prevention Outlook There are four types of influenza virus. Influenza A is the most common, followed by influenza B. Both are highly contagious, and...A healthcare professional may be able to test for COVID-19, the flu and RSV at the same visit. Abbott offers several diagnostic tools to aid in fast, reliable respiratory virus testing. From our ID-NOW™ rapid system to the Alinity m Resp-4-Plex to the Panbio COVID-19/Flu A&B Rapid Panel test*, we are equipping clinicians with tools to ...The fastest molecular flu test just got faster and even better. Now with early detection and positive results in as few as 5 minutes, allowing you to make effective clinical decisions sooner. Abbott ID NOW is a rapid, instrument-based system for the qualitative detection of infectious diseases using isothermal nucleic acid amplification technology.Nationally, flu activity during the 2021-2022 season began to increase in November and remained elevated until mid-June with two different waves of influenza A (H3N2) virus activity occurring; the first peaked in late December 2021, and the second in April 2022. Prior to the emergence of SARS-CoV-2, flu activity would most commonly begin to ...Abstract. Influenza is an infectious respiratory disease that, in humans, is caused by influenza A and influenza B viruses. Typically characterized by annual seasonal epidemics, sporadic pandemic ...All negative influenza A and B test results are presumptive. It is recommended these results be conﬁrmed by viral culture or an FDA-cleared inﬂuenza A and B molecular assay. Negative results ... This instructional video reviews the items included in the McKesson Consult® Flu Test Kit and provides an overview of step-by-step instructions for using this test kit.Oct 25, 2021 · During the 2020-2021 flu season, there was very low circulation of seasonal flu viruses. During September 27, 2020–May 22, 2021 in the United States, 1,899 (0.2%) of 1,081,671 clinical samples tested were positive for an influenza virus (713 [37.5%] influenza A and 1,186 [62.5%] influenza B). During that same period, public health ... The CDC’s website says you can get a flu shot and a COVID-19 shot at the same time --in the same arm or one in each arm--if that is convenient and you are due for vaccination, but they do not ...Dec 3, 2020 · Influenza A and B infect humans each flu season and are both highly contagious. While treatment and prevention are the same, flu B tends to be less common. Search Understanding the Different Types of Flu. Influenza is a respiratory infection caused by one of four different virus types: A, B, C, and D. Influenza is common worldwide, but only influenza types A and B cause seasonal epidemics. Influenza epidemics sometimes become pandemics, causing mass outbreaks of illness in humans around the world in a ...Only type A and B cause human disease of any concern. Influenza virus is transmitted primarily by droplets or respiratory secretions of infected persons. Influenza occurs all over the world, with an annual global attack rate estimated at 5 – 10% in adults and 20 – 30% in children.Viral transport medium acceptable for collection of influenza specimens in 1 mL or 3 mL volumes can be used to transport swabs for COVID-19 testing. For swabs in saline: OP, NP or anterior nasal swabs may be placed in 1 to 3 mL of sterile saline (0.85 to 0.9%) in a sterile screw cap container. Influenza, known as “ the flu ,” is a highly contagious respiratory virus. It’s most common during the fall and winter months. It typically spreads through respiratory droplets when a person...Viral transport medium acceptable for collection of influenza specimens in 1 mL or 3 mL volumes can be used to transport swabs for COVID-19 testing. For swabs in saline: OP, NP or anterior nasal swabs may be placed in 1 to 3 mL of sterile saline (0.85 to 0.9%) in a sterile screw cap container. *The BD Veritor™ System for Rapid Detection of SARS-CoV-2 & Flu A+B is intended for the in vitro, simultaneous qualitative detection and differentiation of SARS-CoV-2 nucleocapsid antigen and/or influenza A and B nucleoprotein antigens directly from anterior nasal swab samples taken from individuals who are suspected of a viral respiratory infection consistent with COVID-19 by a healthcare ...Influenza, known as “ the flu ,” is a highly contagious respiratory virus. It’s most common during the fall and winter months. It typically spreads through respiratory droplets when a person...Influenza (flu): The flu is commonly caused by type A and B influenza strains. Symptoms are typically more severe than the common cold and can include coughing, fever (or chills), muscle aches, shortness of breath, and more.cough. sore throat. runny or stuffy nose. muscle or body aches. headaches. fatigue (tiredness) some people may have vomiting and diarrhea, though this is more common in children than adults. *It’s important to note that not everyone with flu will have a fever. More information is available at Flu and COVID-19 symptoms.H1N1 flu is a subtype of influenza A. Subtypes of influenza A are categorized based on two proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N). There are many H and N subtypes, and each one is numbered. All H and N flu subtypes are influenza A viruses. Each influenza subtype has many different strains of influenza virus.*The BD Veritor™ System for Rapid Detection of SARS-CoV-2 & Flu A+B is intended for the in vitro, simultaneous qualitative detection and differentiation of SARS-CoV-2 nucleocapsid antigen and/or influenza A and B nucleoprotein antigens directly from anterior nasal swab samples taken from individuals who are suspected of a viral respiratory infection consistent with COVID-19 by a healthcare ... Influenza A and B infect humans each flu season and are both highly contagious. While treatment and prevention are the same, flu B tends to be less common. SearchCoV-2 negative results are presumptive and confirmation with a molecular assay, if necessary for patient management, may be performed. All negative influenza A and B test results areOnly type A and B cause human disease of any concern. Influenza virus is transmitted primarily by droplets or respiratory secretions of infected persons. Influenza occurs all over the world, with an annual global attack rate estimated at 5 – 10% in adults and 20 – 30% in children.Print. The Centers for Disease Control and Prevention (CDC) recognizes that school administrators, teachers, staff, and parents are concerned about influenza (flu), particularly its effects on children. Educators and staff can help slow the spread of respiratory illnesses, including flu. On this page, you will find information on preventing the ...Overview. Influenza virus testing is not required to make a clinical diagnosis of influenza in outpatients with suspected influenza, particularly during increased influenza activity when seasonal influenza A and B viruses are circulating in the local community. However, influenza virus testing can inform clinical management when the results may ...Oct 3, 2022 · fever* or feeling feverish/chills. cough. sore throat. runny or stuffy nose. muscle or body aches. headaches. fatigue (tiredness) some people may have vomiting and diarrhea, though this is more common in children than adults. *It’s important to note that not everyone with flu will have a fever. Influenza (Flu) Viruses There are two main types of human flu viruses: types A and B. The flu A and B viruses that routinely spread in people are responsible for seasonal flu epidemics each year. Flu A viruses can be broken down into sub-types depending on the genes that make up the surface proteins.Feb 16, 2023 · indicate that influenza A and/or influenza B is likely, and diagnostic test results for other causes of illness (e.g., other respiratory illness) are negative. As fears of a "tripledemic" die down, health officials say they are seeing an uptick of a particular strain of the flu: influenza B. According to data from the Centers for Disease Control and ...Influenza (flu) is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and lungs. Some people, such as people 65 years and older, young children, and people with certain health conditions, are at higher risk of serious flu complications. There are two main types of influenza (flu) viruses: types A and B.Abstract. Influenza is an infectious respiratory disease that, in humans, is caused by influenza A and influenza B viruses. Typically characterized by annual seasonal epidemics, sporadic pandemic ...Yes. There are tests that will check for seasonal influenza A and B viruses and SARS-CoV-2, the virus that causes COVID-19. Testing for these viruses at the same time gives public health officials important information about how flu and COVID-19 are spreading and what prevention steps people should take.Flu A and B cause the same types of symptoms, so it’s impossible to tell which variety you have from symptoms alone. Flu B symptoms can range from mild to severe. They often come on quickly and last for about a week.The influenza A and B virus genomes each comprise eight negative-sense, single-stranded viral RNA (vRNA) segments, while influenza C virus has a seven-segment genome. (See Table 1.) The eight segments of influenza A and B viruses (and the seven segments of influenza C virus) are numbered in order of decreasing length.The flu is an infection of the nose, throat, and lungs. It spreads easily from person to person. This article discusses influenza types A and B. A type of influenza A infection due to the H1N1 influenza strain is commonly called the swine flu. Alternative NamesFeb 16, 2023 · indicate that influenza A and/or influenza B is likely, and diagnostic test results for other causes of illness (e.g., other respiratory illness) are negative. Oct 25, 2021 · During the 2020-2021 flu season, there was very low circulation of seasonal flu viruses. During September 27, 2020–May 22, 2021 in the United States, 1,899 (0.2%) of 1,081,671 clinical samples tested were positive for an influenza virus (713 [37.5%] influenza A and 1,186 [62.5%] influenza B). During that same period, public health ... Oct 16, 2020 · This instructional video reviews the items included in the McKesson Consult® Flu Test Kit and provides an overview of step-by-step instructions for using this test kit. Jul 14, 2023 · The last time the state saw a significant wave of influenza B was in 2019, when 12,950 cases of influenza B were recorded. In 2020, 720 notifications of influenza B were made. There were 57 in ... serious flu complications. There are two main types of . influenza viruses: types A and B. Both type A and B . influenza viruses regularly spread in people, and are . responsible for seasonal flu ...Flu A and B cause the same types of symptoms, so it’s impossible to tell which variety you have from symptoms alone. Flu B symptoms can range from mild to severe. They often come on quickly and last for about a week.Dec 2, 2022 · Influenza (Flu) Viruses There are two main types of human flu viruses: types A and B. The flu A and B viruses that routinely spread in people are responsible for seasonal flu epidemics each year. Flu A viruses can be broken down into sub-types depending on the genes that make up the surface proteins. Influenza (the flu) is a viral infection that causes symptoms like fever and chills, sneezing, coughing and a sore throat. The flu can be serious for some people, but if you are otherwise fit and healthy you usually don’t need to see a doctor. There is a vaccine available for the flu, and it’s recommended that everyone over the age of 6 ...Influenza types A and B. These 2 types of viruses cause widespread illness (epidemics) almost every winter. They often lead to more people needing to go to the hospital, and more people dying from the flu. Public health officials focus on stopping the spread of types A and B. One of the reasons the flu remains a problem is because the viruses ...May 18, 2021 · H1N1 flu is a subtype of influenza A. Subtypes of influenza A are categorized based on two proteins on the surface of the virus, hemagglutinin (H) and neuraminidase (N). There are many H and N subtypes, and each one is numbered. All H and N flu subtypes are influenza A viruses. Each influenza subtype has many different strains of influenza virus. Performance characteristics for influenza A and B were established during February through March 2011 when influenza viruses A/California/7/2009 (2009 H1N1), A/Perth/16/2009 (H3N2), and B/Brisbane/60/2008 (Victoria-Like) were the predominant influenza viruses in circulation according to the Morbidity and Mortality WeeklyOverview. Influenza virus testing is not required to make a clinical diagnosis of influenza in outpatients with suspected influenza, particularly during increased influenza activity when seasonal influenza A and B viruses are circulating in the local community. However, influenza virus testing can inform clinical management when the results may ... Viral transport medium acceptable for collection of influenza specimens in 1 mL or 3 mL volumes can be used to transport swabs for COVID-19 testing. For swabs in saline: OP, NP or anterior nasal swabs may be placed in 1 to 3 mL of sterile saline (0.85 to 0.9%) in a sterile screw cap container.Jan 12, 2023 · There are 4 types of influenza viruses, types A, B, C and D. Influenza A and B viruses circulate and cause seasonal epidemics of disease. Influenza A viruses are further classified into subtypes according to the combinations of the hemagglutinin (HA) and the neuraminidase (NA), the proteins on the surface of the virus. Currently circulating in ... Oct 3, 2022 · fever* or feeling feverish/chills. cough. sore throat. runny or stuffy nose. muscle or body aches. headaches. fatigue (tiredness) some people may have vomiting and diarrhea, though this is more common in children than adults. *It’s important to note that not everyone with flu will have a fever. The four main types of Type A and B influenza viruses that are most likely to spread and make people sick during the upcoming flu season are the targets of seasonal influenza (flu) vaccines. All of the available flu vaccinations in the United States offer protection against the influenza A(H1), A(H3), B/Yamagata, and B/Victoria lineage viruses.Influenza A viruses infect a range of mammalian (e.g. pigs and horses) and avian species, whereas type B and C infections are largely restricted to humans. Only types A and B cause human disease of any concern. All of the currently identified 16 HA and 9 NA subtypes of influenza A viruses are maintained in wild, aquatic bird populations.Flu viruses are of four main types: A, B, C and D. Human influenza type A and B viruses are mainly responsible for the “flu season,” or seasonal influenza epidemics almost every winter in the United States. Type A influenza: This is the cause of most flu cases. It is the only influenza virus causing flu pandemics (a large number of flu ...There are two main types of influenza viruses: types A and B. Both type A and B influenza viruses regularly spread in people and are responsible for seasonal flu each year. WHAT IS THE Room temperature (15°C to 30°C/59°F to 86°F) Internal controls. Positive and negative included. External controls. Positive and negative included. PPA* (versus an FDA-cleared influenza A and B molecular assay) A: 81.5%, B: 80.9%. NPA* (versus an FDA-cleared influenza A and B molecular assay) A: 97.8%, B: 99.1%. For influenza A and influenza B viruses, selective amplification of target nucleic acid from the sample is achieved by the use of target-specific forward and reverse Sep 1, 2023 · Based on NCHS mortality surveillance data available on August 31, 2023, 6.5% of the deaths that occurred during the week ending August 26, 2023 (week 34), were due to pneumonia, influenza, and/or COVID-19 (PIC). This percentage is above the epidemic threshold of 5.5% for this week. There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics (i.e., global epidemics of flu disease).The flu is an infection of the nose, throat, and lungs. It spreads easily from person to person. This article discusses influenza types A and B. A type of influenza A infection due to the H1N1 influenza strain is commonly called the swine flu. Alternative Names Rapid Molecular Assay [influenza viral RNA or nucleic acid detection] A and B. NP 5 swab, nasal swab. 15-30 minutes 6. Yes/No 6. Immunofluorescence, Direct (DFA) or Indirect (IFA) Florescent Antibody Staining [antigen detection] A and B. NP 4 swab or wash, bronchial wash, nasal or endotracheal aspirate. 1-4 hours. Aug 15, 2022 · The flu is caused by an influenza virus. Most people get the flu when they breathe in tiny airborne droplets from the coughs or sneezes of someone who has the flu. You can also catch the flu if you touch something with the virus on it, and then touch your mouth, nose, or eyes. People often confuse colds and flu. LP248181-2 Influenza virus A & B & Respiratory syncytial virus RNA panel Influenza viruses A and B are single-stranded RNA enveloped viruses belonging to the Orthomyxoviridae family. The symptoms of infection of Influenza A and B include fever, cough, sore throat, rhinorrhea, nasal congestion, headache, myalgia and malaise.The US is only about three months into the 2019–2020 flu season, and the illness has already left its mark—but it's a little different this year. According to the Centers for Disease Control ...Influenza B almost exclusively infects humans and is less common than influenza A. Flu type B also mutates about two to three times more slowly than influenza A. Because humans are the natural host of influenza B, pandemics generally do not occur with influenza B viruses. 22. Although scientists can classify and monitor the different types of ...

Influenza virus from the family Orthomyxoviridae are enveloped negative-strand RNA viruses with segmented genomes containing seven to eight gene segments. Of the five genera in the family, only influenza A virus (IAV), influenza B and C viruses are medically relevant to humans. Influenza A and B viruses have a similar structure whereby these .... Who was william afton

The assay targets the influenza A viruses (matrix gene), the influenza B viruses (matrix gene) and RSV (matrix gene). Results are reported as Detected or NOT detected and a semi-qualitative result is provided by reporting the PCR Cycle threshold (Ct) value for positive specimens. Note: Due to supply chain variables and logistical workflows to ...Yes, for some people. There are three flu vaccines that are preferentially recommended for people 65 years and older. These are Fluzone High-Dose Quadrivalent vaccine, Flublok Quadrivalent recombinant flu vaccine and Fluad Quadrivalent adjuvanted flu vaccine . This recommendation was based on a review of available studies which suggests that ... Influenza A is the most common type of influenza virus that causes the seasonal flu. Influenza A viruses are classified by subtypes based on surface proteins hemagglutinin (H) and neuraminidase (N). The viruses are named for the combination of proteins, such as A (H1N1) or A (H3N2). Influenza B.Jul 14, 2023 · The last time the state saw a significant wave of influenza B was in 2019, when 12,950 cases of influenza B were recorded. In 2020, 720 notifications of influenza B were made. There were 57 in ... Waner JL, Todd, SI, Shalaby H, et al. Comparison of Directigen FLU-A with viral isolation and direct immunofluorescence for the rapid detection and identification of influenza A virus. J Clin Microbiol. 1991; 29(3):479-482. 2037665 *The BD Veritor™ System for Rapid Detection of SARS-CoV-2 & Flu A+B is intended for the in vitro, simultaneous qualitative detection and differentiation of SARS-CoV-2 nucleocapsid antigen and/or influenza A and B nucleoprotein antigens directly from anterior nasal swab samples taken from individuals who are suspected of a viral respiratory infection consistent with COVID-19 by a healthcare ...Mar 29, 2017 · Strains of influenza B are exclusively contracted by humans, while A can be carried (and spread) by animals, however, both strains are transmitted mainly by respiratory droplets from coughing and contact with an infected person. This allows strains of A to be spread more rapidly than B, while also meaning strains of B cannot cause pandemics ... Interference was observed for flu A, flu B, RSV, and SARS-CoV-2 when evaluated with high concentrations of Pneumocystis jirovecii (PJP). There is a risk of false negative for flu A, B, RSV, and SARS-CoV-2 results under certain co-infection circumstances with Pneumocystis jirovecii (PJP). The Alinity m Resp-4-Plex assay was validated with ...for influenza A and B were not re-established with the modified device and may vary from previous performance. Performance characteristics may vary against other emerging influenza viruses. If ...Table 2: Available FDA-Cleared Rapid Influenza Diagnostic Tests (Antigen Detection Only) 1. These tests provide results in 10-15 minutes and differentiate between influenza A and B. Available FDA cleared tests as of August 2020. Full genome sequencing can reveal the approximately 13,500-letter sequence of all the genes of the influenza virus’ genome. The two influenza types (A and B) that cause seasonal epidemics have eight RNA gene segments. These genes contain instructions for making new viruses and play an important role in how influenza viruses cause infection.Influenza (the flu) is a viral infection that causes symptoms like fever and chills, sneezing, coughing and a sore throat. The flu can be serious for some people, but if you are otherwise fit and healthy you usually don’t need to see a doctor. There is a vaccine available for the flu, and it’s recommended that everyone over the age of 6 ... Understanding the Different Types of Flu. Influenza is a respiratory infection caused by one of four different virus types: A, B, C, and D. Influenza is common worldwide, but only influenza types A and B cause seasonal epidemics. Influenza epidemics sometimes become pandemics, causing mass outbreaks of illness in humans around the world in a ...Jan 10, 2020 · Types Symptoms Comparison Treatment Prevention Outlook There are four types of influenza virus. Influenza A is the most common, followed by influenza B. Both are highly contagious, and... serious flu complications. There are two main types of . influenza viruses: types A and B. Both type A and B . influenza viruses regularly spread in people, and are . responsible for seasonal flu ...Room temperature (15°C to 30°C/59°F to 86°F) Internal controls. Positive and negative included. External controls. Positive and negative included. PPA* (versus an FDA-cleared influenza A and B molecular assay) A: 81.5%, B: 80.9%. NPA* (versus an FDA-cleared influenza A and B molecular assay) A: 97.8%, B: 99.1%. Types Symptoms Comparison Treatment Prevention Outlook There are four types of influenza virus. Influenza A is the most common, followed by influenza B. Both are highly contagious, and...There are three types of flu viruses: A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling, aching, coughing, and running high....

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