A study ovalocytosis was perfomed in endemic malaria areas of the West Lombok subdistric, West Nusa Tenggara Province, covering the periods of 1991, 1992 (August, October, December) and 1993 (April, June) in different areas which their prevalence were 8.8 percent (year 1991), 1.9 percent (year 1992) and 3.8 percent (year 1993). Examination of blood smear with Giemsa stained of all subject studi…