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Virology - Coggle Diagram
Virology
Infection
Spread locally/systemically
Replicates at target organ - causes cell damage
Replicates at entry site
Onset of clinical signs occur
Gains entry to host
Incubation period = time from gaining entry to showing clinical signs
Replication
Enters host cell
Nucleic acid is released when capsid is broken down
Nucleic acid replicates within host nucleus
Directs protein production to produce virus
Fuses with host cell membrane
Host cell membrane ruptures releasing viral particles = lytic cycle
Bind to target cell membrane receptor
Structure
Capsid
Glycoprotein spikes
Nucleic acid
Envelopes
Treatment and recovery
Antibiotics not useful
Supportive treatments
Immune system produce T cells and B cells
Some antiviral drugs prevent replication and attachment
Obligate parasites
Lack protein synthesis apparatus
Unable to survive outside of living host
Smallest infective agent
Can affect most forms of life