Table 1 Epidemiological characteristics of imported malaria cases in China from 2014 to 2021

Sex

 Male

5532 (95.96)

 Female

233 (4.04)

Age (years), mean ± SD

41.11 ± 9.92

Purpose of travel

 Labor

4700 (81.53)

 Official duties

248 (4.30)

 Business

669 (11.60)

 Others

148 (2.57)

Origin of infection

 Africa

5536 (96.03)

 Asia

207 (3.59)

 Oceania

14 (0.24)

 South America

8 (0.14)

Malaria species

 Plasmodium falciparum

3996 (69.31)

 P. ovale

1067 (18.51)

 P. vivax

416 (7.22)

 P. malariae

203 (3.52)

 P. knowlesi

1 (0.02)

 Mixed infections

82 (1.42)