Infectious Dz Exam 3: Malaria (5)
questions well answered graded A+
What is the definition of malaria? - ANS ✔An infectious disease characterized by cycles of chills,
fever, and sweating, caused by a protozoan of the genus Plasmodium in red blood cells, which is
transmitted to humans by the bite of an infected *female anopheles mosquito.*
What are the different types of Plasmodium? Which ones can infect humans? - ANS ✔
What factors determine the occurance of Malaria? What climate is required? - ANS ✔
Plasmodium that is most widespread (found in ALL endemic areas) - ANS ✔P. vivax
Which Plasmodium species is found primarily in the tropics and subtropics> - ANS ✔P.
falciparum and P. malariae ("patchy" distribution)
Which Plasmodium species is found primarily in tropical *West Africa*? - ANS ✔P. ovale
What is the general pathophysiology of Malaria? - ANS ✔
Which forms of plasmodium have a *hypnosoite form* which lingers in the liver for months? -
ANS ✔
What is the incubation period based on species?
P. malariae
P. ovale
, P. vivax
P. falciparum - ANS ✔P. malariae: 28 days
P. ovale: 17 days
P. vivax: 14 days
P. falciparum: 12 days
MOV-F (28, 17, 14, 12)
Symptomatic a few weeks after infection ...
Which plasmodium species has the longest incubation period? Which has the shortest? - ANS
✔Longest -- P. malariae: 28 days.
Shortest -- P. falciparum: 12 days.
P. vivax & P. ovale may relapse after longer period...
Which plasmodium has the potention for a prolonged erythrocytic infection (can become
symptomatic YEARS later)?? - ANS ✔P. malariae
- NO hypnozoite stage
- can be asymptomatic
Which plasmodium have *48 hour* paroxysm of fever? - ANS ✔P. falciparum (can be sporadic)
P. vivax
P. ovale
questions well answered graded A+
What is the definition of malaria? - ANS ✔An infectious disease characterized by cycles of chills,
fever, and sweating, caused by a protozoan of the genus Plasmodium in red blood cells, which is
transmitted to humans by the bite of an infected *female anopheles mosquito.*
What are the different types of Plasmodium? Which ones can infect humans? - ANS ✔
What factors determine the occurance of Malaria? What climate is required? - ANS ✔
Plasmodium that is most widespread (found in ALL endemic areas) - ANS ✔P. vivax
Which Plasmodium species is found primarily in the tropics and subtropics> - ANS ✔P.
falciparum and P. malariae ("patchy" distribution)
Which Plasmodium species is found primarily in tropical *West Africa*? - ANS ✔P. ovale
What is the general pathophysiology of Malaria? - ANS ✔
Which forms of plasmodium have a *hypnosoite form* which lingers in the liver for months? -
ANS ✔
What is the incubation period based on species?
P. malariae
P. ovale
, P. vivax
P. falciparum - ANS ✔P. malariae: 28 days
P. ovale: 17 days
P. vivax: 14 days
P. falciparum: 12 days
MOV-F (28, 17, 14, 12)
Symptomatic a few weeks after infection ...
Which plasmodium species has the longest incubation period? Which has the shortest? - ANS
✔Longest -- P. malariae: 28 days.
Shortest -- P. falciparum: 12 days.
P. vivax & P. ovale may relapse after longer period...
Which plasmodium has the potention for a prolonged erythrocytic infection (can become
symptomatic YEARS later)?? - ANS ✔P. malariae
- NO hypnozoite stage
- can be asymptomatic
Which plasmodium have *48 hour* paroxysm of fever? - ANS ✔P. falciparum (can be sporadic)
P. vivax
P. ovale
