Q1
Arthropods
Answer: animals, including ticks, spiders, mites and other insects as well as
crustaceans such as shrimp, lobster, and crabs
Q2
Vector
Answer: a carrier. an arthropod that transports a disease-causing organism, or
pathogen, from one host to another
Q3
Venom
Answer: toxin produced by some animals such as scorpions, spiders, and snakes
Q4
Envenomation
Answer: the poisonous effects of the bites or stings of arthropods or snakes
Q5
Passive or Mechanical transmission
Answer: the arthropod carries the pathogen from one host to another the pathogen
does nothing during the transfer. "It goes along for the ride" ex: Filth flies carry
bacteria or other disease-causing organisms on their mouth parts and feet from
infected human feces ; CAUSES DYSENTARY OR OTHER DIARRHEAL DISEASE ex:
Cockroaches provide a similar 'transport service' by carrying disease organisms on
their legs, feet, and mouth parts; CAUSES CHOLERA
Q6
Active transmission or Biological transmission
Answer: the disease-causing agent undergoes some change in the body of the
arthropod. the pathogen may multiply or simply develop into an infectious form.
,Q7
Four types of Active Transmission
Answer: Inoculation Regurgitation Fecal Contamination Crushing the vector
Q8
Inoculation
Answer: A vector injects the pathogen into the host with its saliva while it feeds on the
host ex: Mosquitoes transmit MALARIA by inoculation
Q9
Regurgitation
Answer: The vector vomits the pathogen into the host while it feeds on the host ex:
Fleas transmit BUBONIC PLAGUE by vomiting then feeding on host
Q10
Fecal Contamination
Answer: the vector defecates into a wound on the host. As the wound itches,
scratching and rubbing by the host causes the pathogen to enter the host's body ex:
Chagas' disease (parasite Trypanosoma cruzi) also known as North American Sleeping
Sickness is transmitted in this way by the (Triatomite bug) kissing bug
Q11
Crushing the Vector
Answer: The vector is smashed onto the skin of the host. When the host wipes off the
dead bug, the pathogen is rubbed into the skin ex: The bacteria that cause epidemic
typhus live and multiply in the body of the body louse. The body louse transmits
epidemic typhus in this manner
Q12
Arthropods: Mosquitoes
Answer: carry malaria Anything that can hold water provides a habitat for larvae
, Q13
Malaria Fast Fact
Answer: must always be considered in any Soldier deployed to a malaria- endemic
region and in which the Soldier has developed an unexplained febrile illness.
Q14
Mosquito Prevention
Answer: 2 prevention Categories - PREVENTION OF BITES Insect bar, Long-sleeved,
loose fitting clothing, Chemical repellent education PREVENTION OF DISEASE
DEVELOPMENT Administer doxycycline
Q15
Arthropods: Sand Flies, where do they attack and how do you prevent?
Answer: small, bloodsucking gnats that look like small mosquitoes. diseases of
military importance: Sandfly fever and LEISHMANIASIS attack man at the wrists,
ankles or any exposed part of the body PREVENTION: > proper wearing of the uniform
and application of repellents will prevent most infections > Dogs and other
domesticated animals should be avoided
Q16
Fleas: Habitat? Prevention?
Answer: painful biters, but are efficient vectors of plague, TYPHUS, and tularemia they
become infected feeding on rodents (chipmunks, rats, squirrels) then transmit the
bacteria to humans when they feed (bite) found around animal beds, burrows, and
nests outdoors, fleas are abundant during rainy summers and high humidity areas
PREVENTION: Locating and removing the rodents Sprays, fogs, powders and traps
Q17
Ticks: What are they? Habitat & Prevention?
Answer: most effective disease transporting arthropod when it comes to disease
transmission found in areas of tall grass close to mammal resting places and watering
holes PREVENTION: repellents > Search the total body area daily and remove ticks
promptly. the female can pass the pathogen to the egg so that when the larva hatches
it is already able to pass on the disease upon eating its first meal