From Plasmodium vivax outbreak to elimination: lessons learnt from a retrospective analysis of data from Guantang

Table 5 Malaria antibody levels within randomly selected residents in Guantang between 1978 and 1995 the indirect fluorescent antibody (IFA) test (except years 1981–1983 and 1987)

Year	No. people tested	No. people positive	Positive rate (%)
1978	907	80	8.82
1979	611	51	8.35
1980	524	72	13.74
1984	269	11	4.09
1985	300	1	0.33
1986	627	2	0.32
1988	400	0	0
1989	282	0	0
1990	300	0	0
1991	400	5	1.25
1992	331	3	0.91
1993	845	8	0.95
1994	862	6	0.70
1995	393	6	1.53

ISSN: 1475-2875