Malaria Day theme.
“Invest in the Future:
Defeat Malaria”
World Malaria Day Theme 2013 – 2015
World Malaria Day (April 25)
MALARIA types - 4
1. P.Vivax
2. P. falciparum
3. P. malariae
4. P. ovale
P.vivax and P. ovale - 8 to 10 days
P. falciparum - 10 to 12 days
P. malariae - 15 to 20 days
MICROSCOPIC
DIFFERENTION OF MALARIA PARASITE SPECIES
|
|
P. vivax
|
P. falciparum
|
P. malariae
|
P. ovale
|
|
1. Red Blood Cell
|
|
|
|
|
|
a) Size
|
Enlarged
|
Normal or small
|
Normal
|
Enlarged
|
|
b) Shape
|
Round
|
Round
|
Round
|
Ovalor crenated
|
|
c) Co
lour
|
Pale
|
Normal
|
Normal
|
Pale
|
|
2. Parasite
|
|
|
|
|
|
a) Stages in peripheral Blood
|
All stages
|
Rings and gameto-
Cytes
|
All stages
|
All stages
|
|
b) No. of parasites in RBC
|
Usually single sometimes more
|
Usually single
times multiple
|
Single
|
Single
|
|
c) Chromatin in ring stage
|
Big, single Rarely double
|
Small, sometimes
Double
|
Big, single
|
Big, single
|
|
d) Ring size in relation to RBC
diameter
and character
|
1/3 coarse
|
1/5 fine hair like
|
1/3 coarse
|
1/3 coarse
|
|
e) Cytoplasm
|
Ring shaped or amoeboid
|
Ring shaped
|
Ring shaped
|
Ring shaped or
amoeboid
|
|
f) Stippling on infected RBC
|
Fine, numerous Schuffner’s Dots
|
Big, a few Maurer’s
dots
|
Nil
|
Fines
|
|
g) Pigment
|
Coarse Aggregated
|
-
|
Coarse centrally
located
|
Coarse aggregated
|
|
h) Gametocytes
|
Round
|
Crescent shaped
|
Round
|
Round
|
|
i)
Number of merozoites in a
schizont
|
12 – 24
|
6 – 12
|
6 – 12
|
|
|
j) Other forms of rings
|
Very rarely
|
Accole, swallow and other forms
|
Band form
|
|
