Epidemiological profile of Plasmodium ovale spp. imported from Africa to Anhui Province, China, 2012–2019

Malaria Journal

Table 3 Epidemiologic characteristics of imported two P. ovale subspecies

Variables	P. ovale curtisi (n = 62) N (%)	P. ovale wallikeri (n = 51) N (%)	P value
Sex^a
Male	61 (98.4)	51 (100.0)	1.000
Female	1 (1.6)	0 (0.0)
Age(years), mean(SD)	43.84 ± 9.21	43.53 ± 7.82	0.850
Occupation^a
Worker	51 (82.3)	46 (90.2)	0.463
Waiter	7 (11.3)	3 (5.9)
Other	4 (6.5)	2 (3.9)
Previous malaria
Yes	44 (71.0)	41 (80.4)	0.248
No	18 (29.0)	10 (19.6)
Duration of stay overseas^a^,^b
≤ 30	0 (0.0)	1 (2.3)	0.489
≤ 180	6 (11.8)	7 (16.3)
≤ 365	10 (19.6)	11 (25.6)
> 365	35 (68.6)	24 (55.8)
Latency period (days)^c, median (IQR)	59.50(23.0–192.75)	34 (12–112.50)	0.070

^aDifferences in proportions were tested by Fisher’s exact test
^b94 cases (83.19%; 94/113) with available information of duration of stay overseas
^cThe time elapsed, in days, between arrival in China and onset of disease was defined as the latency period. Cases showing onset of symptoms before arrival were not included in the analysis. A case with a record of 1533 days is excluded, as the authenticity is questionable

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