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Table 3 Characteristics of malaria patients identified by passive case detection.

From: Rapid decrease of malaria morbidity following the introduction of community-based monitoring in a rural area of central Vietnam

Suspected malaria cases

4,862

 

n,

%

(95%CI)

History of fever previous 48 hours

3,871

79.6

(66.2 ; 93)

Fever

4,570

94.0

(88.9 ; 99.1)

Malaria infection

893

18.4

(10.4 ; 26.4)

   P. falciparum

677

13.9

(20.5; 34.3)

   P. vivax

164

3.4

(2.4 ; 4.4)

   P. malariae

1

0.02

(0 ;0.06)

   Mixed

51

1.0

(0.7; 1.6)

Parasite density/μl (GM), without fever

   

   P. falciparum

21

422.0

(974.0–1183.0)

   P. vivax

8

174.0

(50.0–598.0)

Parasite density/μl (GM°), fever cases

   

   P. falciparum

696

1880.0

(1563.0–2262.0)

   P. vivax

202

641.0

(477.0–863.0)

Gametocytes carriers

192

3.9

(2.7 ; 5.2)

Malaria cases by age group

   

   ≤ 9 years

435

22.6

(13.7; 35.1)

   10–19 years

202

22.2

(14.2; 32.9)

   20–29 years

106

16.6

(9.5 ; 27.4)

   30–39 years

74

14.1

(8.6 ; 22.5)

   40–49 years

49

11.2

(7.0 ; 17.3)

   ≥ 50 years

27

6.3

(3.0 ; 12.5)

  1. GM: geometric mean