What makes the influenza virus unique?
Table of Contents
What makes the influenza virus unique?
The most outstanding characteristic of influenza viruses is their rapid evolution which leads to its great variability. This is the case especially with influenza A viruses. According to the antigenic properties of their envelope proteins, influenza A viruses are subdivided into a number of subtypes.
What is one fact about influenza virus?
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.
What are the unique features of virus?
They are unique because they are only alive and able to multiply inside the cells of other living things. The cell they multiply in is called the host cell. A virus is made up of a core of genetic material, either DNA or RNA, surrounded by a protective coat called a capsid which is made up of protein.
How is influenza virus different in its host range from other viruses?
Influenza A viruses infect a wide range of host species, whereas the main hosts for influenza B and C are humans, and influenza D virus has thus far been found to infect cattle, goats and pigs1 (Fig. 1).
How is influenza A different from B?
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.
What are 3 interesting facts about influenza?
Here are 10 facts about the flu you should know.
- Flu season is between October and May.
- The flu is contagious before symptoms start.
- Flu symptoms can start abruptly.
- It takes up to two weeks for the flu vaccine to work.
- You need a new flu vaccine every year.
- The flu vaccine doesn’t cause the flu.
What is definition of influenza?
Influenza is a viral infection that attacks your respiratory system — your nose, throat and lungs. Influenza is commonly called the flu, but it’s not the same as stomach “flu” viruses that cause diarrhea and vomiting.
Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganism?
Cards In This Set
| Front | Back |
|---|---|
| Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms? | Lack cell structure |
| The Dutch merchant who made and used quality magnifying lenses to see and record microorganisms was | Antonie van Leeuwenhoek |
What characteristics of viruses distinguishes them from cells?
Nonliving characteristics include the fact that they are not cells, have no cytoplasm or cellular organelles, and carry out no metabolism on their own and therefore must replicate using the host cell’s metabolic machinery. Viruses can infect animals, plants, and even other microorganisms.
How bad is influenza A?
Type A influenza infection can be serious and cause widespread outbreaks and disease. Common symptoms of type A infection can be confused with other conditions. While in some milder cases the flu can resolve on its own without significant symptoms, severe cases of type A influenza can be life-threatening.
What is worse Influenza A or B?
Type A influenza is generally considered worse than type B influenza. This is because the symptoms are often more severe in type A influenza than in type B influenza. Type A influenza is more common than type B influenza. Researchers suggest that most adults have considerable immunity against type B influenza.
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