Is influenza lytic or lysogenic?
(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 H1N7?
A novel H1N7 influenza virus (A/swine/Eng/191973/92) was isolated from nasal swabs collected from two pigs on a farm where there had been recent clinical disease due to infection with an H1N1 virus (A/swine/Eng/195852/92).
Is H1N1 same as bird flu?
However, certain subtypes of influenza A virus are specific to certain species, except for birds, which are hosts to all known subtypes of influenza A viruses. Currently circulating Influenza A subtypes in humans are H3N2 and H1N1 viruses.
What is avian flu?
Avian influenza refers to the disease caused by infection with avian (bird) influenza (flu) Type A viruses. These viruses occur naturally among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species. Avian flu viruses do not normally infect humans.
What are the symptoms of bird flu in humans?
The symptoms of bird flu in humans are similar to those of regular influenza and include:
- fever.
- sore throat.
- cough.
- headache.
- aching muscles.
What does the H and N mean in flu?
Influenza A viruses are classified by subtypes based on the properties of their hemagglutinin (H or HA) and neuraminidase (N or NA) surface proteins.
What caused the outbreak of swine flu?
In 2009, when the virus H1N2 co-infected a human host at the same time as the Euroasiatic H1N1 swine strain a new human H1N1 strain emerged, which caused the 2009 pandemic. Swine flu spread very rapidly worldwide due to its high human-to-human transmission rate and due to the frequency of air travel.
Is the flu a lytic virus?
As a lytic virus, numerous influenza virus particles are released from the infected epithelia and macrophages (5, 9, 33).