Pathogens and Infectious Diseases: Further Exploration (HSC SSCE Biology): Flashcards
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Two main types of non-cellular pathogens
Two main types of non-cellular pathogens
Viruses and prions
Obligate parasites
Obligate parasites
Can only reproduce and metabolise inside a host cell
Three core components of all viruses
Three core components of all viruses
Genetic material (DNA or RNA), capsid, envelope (some viruses)
Retroviruses
Retroviruses
Viruses containing RNA as their genetic material
What prions are made of
What prions are made of
Abnormal protein with no DNA or RNA
TSE incubation period and outcome
TSE incubation period and outcome
5-20 years incubation; always fatal
Three elements in chain of infection
Three elements in chain of infection
Susceptible host, pathogen, mode of transmission
Three modes of disease transmission
Three modes of disease transmission
Direct contact, indirect contact, vector transmission
Fomite
Fomite
Any object or substance that carries infection
Percentage of infectious diseases that are vector-borne
Percentage of infectious diseases that are vector-borne
Around 17%