P. Ovale - Malaria

8/12/2019 P. Ovale - Malaria

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A protozoan which causes

malaria along with Plasmodium

vivax, Plasmodium malariae,

and Plasmodium falciparum.

Its lifecycle is similar with the

other plasmodium.

It is the least among the four

species to cause malaria.

Responsible for benign malaria

and can remain in the body for

years without producing

symptoms


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Infected RBCs Somewhat larger than normal, often with fringed orirregular edge, and oval in shape

Small trophozoite

(early rings)

Small, darker in color, and generally more solid than

those of P. falciparum; Schffnersdots present

Growing trophozoite Resembles closely same stage of P. malariae but is

considerably larger; pigment is lighter and lesscospicuous

Large trophozoite Seldom present

Schizont

(presegmenting)

About 25% of infected cells are oval shaped; usual

picture is that of a round parasaite in the center of an

oval cell; many cells with indefinite fringed outline;pigment lighter and less coarse than in P. malariae

Schizont (mature) Usually 8 merozoites arranged around a central block of

pigment

Gametocyte Distinguished from P. malariae by size of infected cells

and by Schffnersdots


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Fig. 1:Normal red blood

cell;

Figs. 2-5:Developing ring-

form trophozoites.

Figs 6-12: Developing

trophozoites;

Figs 13-15: Maturetrophozoites.


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Figs. 16-22:Developing

schizonts.

Fig. 23: Mature schizont.

Fig. 24: Macrogametocyte

(female);

Fig. 25: Microgametocyte

(male).


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Microgametocyte Macrogametocyte


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a parasitic disease which is spread from person to

person by the bite of an infected Anopheles mosquito.


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Malaria is a disease which affects 109 countries around theworld.

There are between 250 million and 500 million cases ofmalaria each year around the world.

One million people die from malaria each yearmost of them

children. The vast majority of malaria cases around the world occur in

sub-Saharan Africa.

90% of all malaria deaths occur in sub-Saharan Africa.

When insecticide-treated mosquito nets are used properly by

three-quarters of the people in a community, malariatransmission is cut by 50%, child deaths are cut by 20%, andthe mosquito population drops by as much as 90%.

It is estimated that less than 5% of children in sub-SaharanAfrica currently sleep under any type of insecticide-treated net.

http://english.prolasa.org/malaria-prevention/
http://english.prolasa.org/malaria-prevention/http://english.prolasa.org/malaria-prevention/http://english.prolasa.org/malaria-prevention/http://english.prolasa.org/malaria-prevention/


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Symptoms show take 8 14 days (P. ovale), but

symptoms may occur after some months

fever

rigors

headaches

sweating

tiredness

myalgia (limbs and back) abdominal pain

vomiting

diarrhea

loss of appetite

orthostatic hypotension

nausea

slight jaundice

cough enlarged liver and spleen

(sometimes not palpable)


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P. Ovale - Malaria