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Table 2 ITP clinical presentation in included cases

From: Immune thrombocytopenic purpura after influenza vaccine administration; a systematic review and meta-analysis

Author (Year)

Platelet Count

Bone marrow findings

Period between vaccination and occurrence of ITP (days)

Before vaccine

After vaccine

Tishler et al. (2006)

NR

3,000/mm3

hypercellularity with many megakaryocytes and no infiltration of foreign cells

14

Mamori et al. (2008)

164ā€‰Ć—ā€‰103/ĀµL

5ā€‰Ć—ā€‰103/ml

NR

7

Kelton et al. (1981)

Reported to be normal

20,000 /ĀµL

NR

14

Wan Jamaludin et al. (2018)

203ā€‰Ć—ā€‰109/L

3ā€‰Ć—ā€‰109/L

hypo-normocellularity, adequate megakaryocytopoiesis without lymphomatous relapse or dysplasia supportive of ITP

7

Shlamovitz et al. (2013)

NR

less than 5 k/mL

hypercellular marrow with erythroid and megakaryocytic hyperplasia. There was a mild to moderate left shift of the red cell precursors and megakaryocytes

4

Ikegame et al. (2006)

180ā€‰Ć—ā€‰109/l

3810

38ā€‰Ć—ā€‰109/l and 10ā€‰Ć—ā€‰109/l on days 14 and 17

Bone marrow examination revealed hyperplastic megakaryopoiesis, with no evidence of relapse

14

Almohammadi et al. (2019)

210,000ā€“267,000/ĀµL

0/ĀµL

NR

2

Hamiel et al. (2016)

NR

17 000/ĀµL

NR

7

Mantadakis et al. (2010)

NR

11,000/UL

NR

26

Nagasaki et al. (2016)

184,000/šœ‡L

39,000/šœ‡L

normocellular; the megakaryocyte count was

56/šœ‡L

28

Ohta et al. (2022)

251,000/šœ‡L

5,000/šœ‡L

Bone marrow was normocellular.

35