| eco-epidemiological characteristics of an unstable peri-urban focus of falciparum malaria. | two fever surveys were carried out in shahbad dairy, delhi in the post-monsoon months of october and november, 1996. shahbad dairy is a peri-urban locality in the northern periphery of delhi. the prevalence of fever was found to be 11.6% in october and 2% in november. in the two surveys a total of 21 (28%) fever cases were found infected with malaria (17 with p. falciparum and 4 with p. vivax). the prevalence of malaria in the surveyed population was lower (25%) in october than in november (36.8 ... | 2001 | 11898456 |