Is ah1n1 a virus?
H1N1 influenza is a subtype of influenza A virus, a communicable viral illness which causes upper and in some cases lower respiratory tract infections in its host. This results in symptoms such as nasal secretions, chills, fever, decreased appetite, and in some cases, lower respiratory tract disease.
Are viruses structurally organized?
Many of these viruses exhibit exquisitely symmetric organization. Irrespective of their shape and size, the underlying theme in all these viruses is that the virus structure is designed to contain and protect the viral genome and deliver it to a specific host cell for subsequent replication of the virus.
How does a virus invade a host cell?
In the lytic cycle, the virus attaches to the host cell and injects its DNA. Using the host’s cellular metabolism, the viral DNA begins to replicate and form proteins. Then fully formed viruses assemble. These viruses break, or lyse, the cell and spread to other cells to continue the cycle.
Is Influensa a virus?
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.
What are the signs and symptoms of ah1n1 influenza?
The signs and symptoms of flu caused by the H1N1 virus are similar to those of infections caused by other flu strains and can include:
- Fever, but not always.
- Chills.
- Cough.
- Sore throat.
- Runny or stuffy nose.
- Watery, red eyes.
- Body aches.
- Headache.
Which part of the influenza virus or its life cycle is a good target for antiviral drugs?
The newly synthesized viral RNPs are exported into the cytoplasm and, after assembly, mature virions bud from the cell surface. Currently, the viral M2 ion channel protein and neuraminidase are the only two targets of influenza antiviral drugs (gray boxes) licensed by the US Food and Drug Administration.
What is virus Slideshare?
WHAT IS A VIRUS? Viruses may be defined as acellular organisms whose genomes consist of nucleic acid, and which obligately replicate inside host cells using host metabolic machinery to different extents, to form a pool of components which assemble into particles called virions .