Microbial infection Flashcards
(25 cards)
What was the animal reservoir for Ebola
Hammerhead Fruit bat
What are the 5 groups of infections agents
Viruses Bacteria Fungi Protozoa Helminths
What is an obligate parasites
It can only survive by infecting other cells
What genetic material do they contain
RNA and DNA
How do the viruses divide
Budding out of host cell Cytolysis
What is smallpox also known as
Variola Virus
What did Harald Zur Hausen discover
Human Papilloma Viruses causing cervical cancer
What do bacteria lack that humans have
Do not have internal membranes Photosynthetic bacteria is an exception Prokaryotes have a single copy of a chromosome Poor defined cytoskeleton Cell was contains peptidogylcan
How do prokaryotes replicate
Binary fission
Diagram of bacteria
What does shigella infect
GI tract
What does neisseria miningitidis do
Causes a rash
Can reach bloodstream and cause septicaemia (Severe inflammatory response)
Penetrate blood brain barrier and enter CSF
What is mycobacterium tuberculosis
Current drugs take too long
Vaccine does not work well
Better tools for early diagnosis
What is helicobacter pylori
Peptic ulcer
Gastric cancer
Why do viruses have high mutatition rates
Error prone mutations and they don’t correct it
What groups of fungi can be divided into
Cutaneous
Mucosal
Systemic mycoses
What do yeast occur as
Yeast
Filaments
What is candida albicans knows as
Fungi
How do protozoa replicate
Bianry fission
Formation of trophozoites
How is infection of protozoa done
Ingestion
Through a vector
What is malaria
Plasmodium species
Blood and tissue parasites
Formation of trophozoites
What is leishmaniasis
Infection of sandfly
Formation of trophozoites
Cutaneous and visceral need drug treatment
Why is helminths metazoa
Differentiated into tissues and organs
Life cycles inside and outside of host
What is flukes?
Required intermediate hostInfected snail
In hepatic portal vein release eggs
Eggs have got spines on them
