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Table 4 Number of volunteers with haematological and biochemical changes at 24 h after initiation of treatment for Plasmodium falciparum infection and on days 35 and 90 after injection of PfSPZ Challenge

From: Controlled human malaria infection by intramuscular and direct venous inoculation of cryopreserved Plasmodium falciparum sporozoites in malaria-naïve volunteers: effect of injection volume and dose on infectivity rates

Parameter

Normal range

Ranges of laboratory abnormalities

Number of volunteers with laboratory abnormalities among the 25 that developed malaria

Screening

24 h after first detection of parasitaemia

Day 35 after injection of PfSPZ Challenge

Day 90 after injection of PfSPZ Challenge

Hb level

120–170 g/L

<120 g/L

1 (119 g/L)

5 (lowest value 106 g/L)

5 (lowest value 103 g/L)

3 (lowest value 104 g/L)

WBC count

4.0–11.0 × 109 cells/L

<4.0 × 109 cells/L

2 (lowest value 3.75 × 109 cells/L)

16 (lowest value 2.4 × 109 cells/L)

1 (3.6 × 109 cells/L)

0

Lymphocyte count

0.9–4.5 × 109 cells/L

<0.9 × 109 cells/L

0

16 (lowest value 0.3 × 109 cells/L)

0

0

Platelet count

130–400 × 109 cells/L

<130 × 109 cells/L

0

6 (lowest value 68 × 109 cells/L)

0

0

ALT

5–40 IU/L

≥1.1 ULN

0

6 (highest value 159 IU/L)

0

0

AST

5−40 IU/L

≥1.1 ULN

1 (58 IU/L)

6 (highest value 125 IU/L)

0

1 (44 IU/L)

LDH

<450 IU/L

≥450 IU/L

2 (highest value 515 IU/L)

9 (highest value 652 IU/L)

1 (466 IU/L)

0

Creatinine

0.3–1.3 mg/dL

Any abnormality

0

0

0

0

  1. HB haemoglobin, WBC white blood cells, ALT alanine aminotransferase, AST aspartate transaminase, LDH lactate dehydrogenase.