Lecture 23 - Ch 34 Vectorborne & Soilborne Microbial Pathogens Flashcards
Animal disease transmissible to humans
zoonosis
diseases in animals present endemically in certain populations
enzootic
incidences of diseases in animals reach epidemic proportions
epizootic
A negative-strand RNA virus that causes rabies
Rhabdovirus
a member of the Bunyaviridae, enveloped, segmented, negative-strand RNA viruses that causes hemorrhagic fever
Hantavirus
small bacteria that have strict intracellular existence in vertebrates
rickettsias
what are the three groups of Rickettsias
(1) typhus group, (2) spotted fever group, and (3) ehrlichiosis group
Transmitted by the body or head louse bite that gets contaminated with louse feces
typhus
Transmitted by dog and wood ticks
spotted fever group
this disease has Flu-like symptoms include fever, headache, malaise, and leukopenia or thrombocytopenia
ehrlichiosis
the most famous disease caused by Borellia
lyme disease
what are the 3 stages of Lyme Disease?
1) localized infection
2) disseminated infection
3) persistent infection
in which stage of lyme disease do you see a “target” bite site?
Stage 1
in which stage of lyme disease does the bacteria leave the site and enter the bloodstream?
Stage 2
disease transmitted by Anopheles mosquitoes as vectors
malaria
Diagnosis of this disease requires identification of Plasmodium-infected erythrocytes in blood smears
Malaria
seasonal disease carried by mosquitoes
West Nile Virus
___________ has caused more human deaths than any other infectious disease except for malaria and tuberculosis
Pandemic plague
what causes plague?
Yersinia pestis
which plague killed 60% of the human population?
Black plague
What was the first recorded plague?
Plague of Justinian
What are the 3 mechanisms that fungi cause disease?
1) allgergic response
2) mycotoxins
3) infections
Fungi colonize the hair, skin, or nails and infect only the surface layers
superficial mycoses
Fungi colonize deeper layers of skin
subcutaneous mycoses
Fungal growth in internal organs of the body
systemic mycoses
__________can be especially serious in individuals with an impaired immune system
Fungal infections
which bacteria causes lockjaw
clostridium tetani
this disease can be transmitted through the soil
tetanus
