Table 2 Category of high frequency keywords

1

Malaria

1. malaria (1374)*, 2. falciparum malaria (519), 6. vivax malaria (292), 29. cerebral malaria (94), 40. malariae malaria (58)

2

Plasmodium

4. P. falciparum (353), 8. Plasmodium (243), 18. P. vivax (139), 32. P. yoelii (88)

3

Vectors

16. An. sinensis (148), 28. An. anthropophagus (94)

4

Imported malaria

3. imported malaria (401), 15. floating population (151), 36. migrant workers (72), 43. imported falciparum malaria (56)

5

Epidemiology

5. malaria surveillance (322), 9. malaria epidemic (232), 13. epidemic situation (185), 14. malaria-endemic areas (185), 17. analysis of epidemic situation (140), 20. malaria incidence rates (133), 23. epidemiology (117), 24. reported malaria cases (109), 25. malaria transmission (105), 33. epidemiological traits (86), 37. epidemiological survey (69), 41. epidemic trend (57), 42. Investigation (57)

6

Diagnosis and Treatment

7. antimalarial medicines (278), 10. artemisinin (214), 11. diagnosis and treatment (205), 19. malaria patients (137), 21. malaria vaccines (131) 22. primaquine (127), 27. artemether (94), 31. infectious disease (88), 34. artesunate (84), 35. blood film (77), 38. insecticide resistance (65), 39. plasmodium infection (60)

7

Prevention and Control

12. preventative and curative measures (190), 26. prevention and control strategies (102), 30. prevention and control effects (88), 44. Global Fund (54)