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Table 2 The incidence rates of P. ovale spp. and P. falciparum in the population returning from Africa to Anhui province

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

Year

P. ovale spp.

P. falciparum

Cameroon (%, n/Na)

Angola (%, n/N)

Equatorial Guinea(%, n/N)

Nigeria (%, n/N)

Cameroon (%, n/N)

Angola (%, n/N)

Equatorial Guinea(%, n/N)

Nigeria (%, n/N)

2012

0.00 (0/64)

0.00 (0/3648)

0.50 (2/397)

0.00 (0/208)

3.13 (2/64)

0.52 (19/3648)

4.03 (16/397)

2.88 (6/208)

2013

2.3 (1/44)

0.14 (2/1427)

1.53 (5/326)

3.85 (3/78)

25.00 (11/44)

3.22 (46/1427)

10.74 (35/326)

23.08 (18/78)

2014

0.00 (0/60)

0.51 (3/593)

2.65 (7/265)

2.65 (4/176)

11.67 (7/60)

4.72 (28/593)

12.08 (32/265)

7.39 (13/176)

2015

2.15 (2/93)

1.02 (5/489)

5.38 (6/112)

0.00 (0/205)

1.08 (1/93)

7.16 (35/489)

10.71 (12/112)

5.37 (11/205)

2016

4.73 (4/85)

1.21 (3/249)

0.00 (0/74)

3.41 (5/147)

12.94 (11/85)

16.47 (41/249)

5.41 (4/74)

7.48 (11/147)

2017

4.76 (2/42)

1.00 (1/101)

3.88 (2/52)

5.00 (5/100)

11.90 (5/42)

12.87 (13/101)

11.54 (6/52)

10.00 (10/100)

2018

5.71 (1/18)

3.69 (6/163)

18.18 (1/6)

0.00 (0/87)

16.67 (3/18)

5.52 (9/163)

66.67 (4/6)

13.79 (12/87)

Average annual incidence (%)

2.48

0.30

1.87

1.70

9.90

2.86

8.86

8.11

  1. a n was the number of reported imported cases, and N was the number of people returning from the infectious origin countries in the same year
  2. The incidence rate is underestimated because the number of people returning from Africa comes from official statistics, in which it is impossible to include all overseas laborers. Therefore, the results are for reference only