- What is the difference between Flu A and Flu B?
- Is influenza bacteria or virus?
- Where do Flu viruses come from?
- Is Flu A or B worse?
- What is Flu A and Flu B?
- What happens if flu is left untreated?
- What class of virus is the flu?
- How long is influenza A contagious?
- Is the flu a retrovirus?
- What are the stages of flu?
- What causes prolonged flu?
- Where do viruses go after flu season?
- Can the flu last 3 weeks?
- Is flu a disease or illness?
- Do viruses cause influenza?
What is the difference between Flu A and Flu B?
Unlike type A flu viruses, type B flu is found only in humans.
Type B flu may cause a less severe reaction than type A flu virus, but occasionally, type B flu can still be extremely harmful.
Influenza type B viruses are not classified by subtype and do not cause pandemics..
Is influenza bacteria or virus?
The flu is a viral infection caused by the influenza virus, a respiratory virus. The common cold is also a viral infection caused by the adenovirus or coronavirus and there are many, many subsets with a lot of variability.
Where do Flu viruses come from?
Most influenza viruses that infect humans seem to originate in parts of Asia, where close contact between livestock and people creates a hospitable environment for mutation and transmission of viruses.
Is Flu A or B worse?
Frequently asked questions about Influenza A and B Influenza type A and type B are similar, but type A is overall more prevalent, sometimes more severe, and can cause flu epidemics and pandemics.
What is Flu A and Flu B?
There are several different types of influenza virus: A, B, C, and D. Influenza types A, B, and C can cause illness in humans. But types A and B cause seasonal epidemics of respiratory illness nearly every year. Influenza A typically causes the majority of illnesses during flu season.
What happens if flu is left untreated?
In rare cases, the flu can be deadly. Left untreated, the flu can cause: ear infection. diarrhea.
What class of virus is the flu?
Influenza viruses belong to the family Orthomyxoviridae and have a single-stranded segmented RNA genome. The influenza viruses are classified into types A, B, and C on the basis of their core proteins.
How long is influenza A contagious?
Most healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick. Children and some people with weakened immune systems may pass the virus for longer than 7 days.
Is the flu a retrovirus?
Influenza is an RNA virus that causes mild to severe respiratory symptoms in humans and other hosts.
What are the stages of flu?
What to expect with the fluDays 1–3: Sudden appearance of fever, headache, muscle pain and weakness, dry cough, sore throat and sometimes a stuffy nose.Day 4: Fever and muscle aches decrease. Hoarse, dry or sore throat, cough and possible mild chest discomfort become more noticeable. … Day 8: Symptoms decrease.
What causes prolonged flu?
The risk of the flu also increases if you have a weakened immune system or a chronic condition, such as: heart disease. kidney disease. diabetes type 1 or 2.
Where do viruses go after flu season?
The influenza A virus does not lie dormant during summer but migrates globally and mixes with other viral strains before returning to the Northern Hemisphere as a genetically different virus, according to biologists who say the finding settles a key debate on what the virus does during the summer off season when it is …
Can the flu last 3 weeks?
The flu typically takes three to seven days to resolve, but symptoms of coughing and fatigue can last up to two weeks, according to the Center for Disease Control and Prevention.
Is flu a disease or illness?
Flu is a contagious respiratory illness caused by influenza viruses that infect the nose, throat, and sometimes the lungs. It can cause mild to severe illness, and at times can lead to death. The best way to prevent flu is by getting a flu vaccine each year.
Do viruses cause influenza?
Influenza A viruses are the only influenza viruses known to cause flu pandemics, i.e., global epidemics of flu disease. A pandemic can occur when a new and very different influenza A virus emerges that both infects people and has the ability to spread efficiently between people.