- Who gets the flu most often?
- Does the lytic cycle kill the host?
- What is the advantage of the lytic life cycle?
- What type of cell does the flu attack?
- How is influenza B treated?
- How does influenza exit the body?
- Is influenza virus lytic or lysogenic?
- What is the difference between lytic and lysogenic cycle?
- Does the flu use the lytic cycle?
- What viruses use the lytic cycle?
- What are the 6 steps of the lytic cycle?
- How did Ebola start?
- Does Ebola use the lytic or lysogenic cycle?
- Is the flu lytic?
- Is the lytic or lysogenic cycle more dangerous?
- What are the steps of the lytic and lysogenic cycle?
- How long is the flu contagious?
- What cycle does influenza use to reproduce?
- Does the lytic or lysogenic cycle take longer?
- Is Influenza B RNA or DNA?
- Does influenza cause viremia?
Who gets the flu most often?
The same CID study found that children are most likely to get sick from flu and that people 65 and older are least likely to get sick from influenza.
Median incidence values (or attack rate) by age group were 9.3% for children 0-17 years, 8.8% for adults 18-64 years, and 3.9% for adults 65 years and older..
Does the lytic cycle kill the host?
In the lytic cycle (Figure 2), sometimes referred to as virulent infection, the infecting phage ultimately kill the host cell to produce many of their own progeny.
What is the advantage of the lytic life cycle?
What is the advantage of lytic life cycle? What are the advantages to a virus of the lysogenic cycle? The virus is able to survive when host cells are incapable of reproducing.
What type of cell does the flu attack?
The main targets of the influenza virus are the columnar epithelial cells of the respiratory tract. These cells may be susceptible to infection if the viral receptor is present and functional.
How is influenza B treated?
Oseltamivir (Tamiflu) and zanamivir (Relenza) are drugs that doctors may use to treat type A or type B influenza. Antiviral drugs can reduce a person’s recovery time by around 2 days, but they are only effective if a person takes them within a few days of symptoms starting.
How does influenza exit the body?
After the vRNPs have left the nucleus, all that is left for the virus to do is form viral particles and leave the cell. Since influenza is an enveloped virus, it uses the host cell’s plasma membrane to form the viral particles that leave the cell and go on to infect neighbouring cells.
Is influenza virus lytic or lysogenic?
3.16 for a diagram of how influenza virus buds through the host cell membrane.) (1) The cell may lyse or be destroyed. This is usually called a lytic infection and this type of infection is seen with influenza and polio.
What is the difference between lytic and lysogenic cycle?
The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.
Does the flu use the lytic cycle?
Some viruses reproduce using both methods, while others only use the lytic cycle. In the lytic cycle, the virus attaches to the host cell and injects its DNA. … For example, the flu is caused by the influenza virus. Typically, viruses cause an immune response in the host, and this kills the virus.
What viruses use the lytic cycle?
Bacteriophages have a lytic or lysogenic cycle. The lytic cycle leads to the death of the host, whereas the lysogenic cycle leads to integration of phage into the host genome. Bacteriophages inject DNA into the host cell, whereas animal viruses enter by endocytosis or membrane fusion.
What are the 6 steps of the lytic cycle?
The lytic cycle, which is also referred to as the “reproductive cycle” of the bacteriaphage, is a six-stage cycle. The six stages are: attachment, penetration, transcription, biosynthesis, maturation, and lysis.
How did Ebola start?
Scientists do not know where Ebola virus comes from. However, based on the nature of similar viruses, they believe the virus is animal-borne, with bats or nonhuman primates with bats or nonhuman primates (chimpanzees, apes, monkeys, etc.) being the most likely source.
Does Ebola use the lytic or lysogenic cycle?
Ebola and Marburg only use the lytic cycle for its replication. Filoviruses target and destroy epithelial cells with the lytic cycle which causes the violent and destructiveness of the disease.
Is the flu lytic?
As a lytic virus, numerous influenza virus particles are released from the infected epithelia and macrophages (5, 9, 33).
Is the lytic or lysogenic cycle more dangerous?
The lytic cycle is faster, but the lysogenic cycle is more dangerous. Since the word “lysogenic” is longer than “lytic,” it is normally the longer and creepier cycle.
What are the steps of the lytic and lysogenic cycle?
These stages include attachment, penetration, uncoating, biosynthesis, maturation, and release. Bacteriophages have a lytic or lysogenic cycle. The lytic cycle leads to the death of the host, whereas the lysogenic cycle leads to integration of phage into the host genome.
How long is the flu contagious?
When Flu Spreads 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.
What cycle does influenza use to reproduce?
Replication and infectivity The replication cycle of influenza viruses, from the time of entry to the production of new virus, is very quick, with shedding of the first influenza viruses from infected cells occurring after only 6 hours.
Does the lytic or lysogenic cycle take longer?
The difference between lysogenic and lytic cycles is that, in lysogenic cycles, the spread of the viral DNA occurs through the usual prokaryotic reproduction, whereas a lytic cycle is more immediate in that it results in many copies of the virus being created very quickly and the cell is destroyed.
Is Influenza B RNA or DNA?
Influenza A and B viruses – the primary influenza viruses that infect people – are RNA viruses that have eight gene segments.
Does influenza cause viremia?
Influenza A viremia has been reported during acute-phase illness, mainly in patients infected with more pathogenic influenza viruses, such as H5N1 (8).