Other Flashcards
(47 cards)
Kochs Postulates
1: pathogen isolated from dead animal with disease
2: grow pathogen in pure culture and ID as same
3: re-infect and uninfected individual and see disease
4: Re-isolate from the 2nd organism and ID to regrow in pure culture
vector
organism (invertebrate arthropod) that transmits a pathogen from reservoir to host
Sylvanic
the cycle in nature of the pathogen (vector-reservoir)
reservoir
long term host of pathogen, usually subclinical
fomite
an inanimate object that transmits an infectious disease
clinical disease
visible or detectable symptoms
sub clinical
no visible or detectible symptoms but will test positive for pathogen
incubation period
time between pathogen exposure and onset of symptoms
pandemic
world-wide outbreak
epidemic
outbreak in small area
acute
rapid onset, more severe
chronic
slowly developing, less severe
subacute
symptoms between acute and chronic
latent
disease with a period of no symptoms when causative agent is inactive
convalescence
healing time
Mosquitos: Order & Family
Diptera/ Culicidae
Holometabolous
entire metamorphosis with unique form for each life cycle (mosquitos)
Mosquito Life Cycle
eggs-larva-pupa-adult
Anopheles eggs
equipped with float, laid singly
Aedes Eggs
laid individually, sticky substance to stick above flood line, hatching stimulated by water level- can survive winter
Culex eggs
laid on rafts in straight up position, cap where larvae come out is oriented down towards water
Gonotrophic Cycle
when mosquitos go from egg to completing a round of reproduction and then nonproductive again
Mosquito Larvae
obligate aquatic, 4-14 days to become pupae, obligate air breathing (siphon), filter feeders
Mosquito Pupa
Non-feeding, short stage, have air trumpets on head, transform to adult inside of pupa
