The Seasonal Periodicity of Malaria and the Mechanism of the Epidemic Wave

12 weeks 1st week 6th week anophelines associated August autumnal wave B.T. malaria B.T. parasite B.T. relapses cent Ceylon commencement crescent-carriers D.Sc delayed primary attacks diseases duration epidemic curve epidemic wave epidemiological epidemiological type epidemiology of malaria equatorial zone fact favourable to transmission four climatic zones gametocytes geometrical progression Holland Illustrations Infections B.T. initiated by relapses insect-carrier Italy July Korteweg latitude magnitude malaria epidemics malaria parasite malariologists mean monthly meteorological conditions month morbidity and mortality morbidity wave mortality wave northern hemisphere number of relapses onset periodicity of malaria Plates R.H. Temp reaches its maximum Recent Advances relapse factor relapse wave relapses recurrences resembles a Type seasonal periodicity seasonal relapse seasonal wave Second Edition SENIOR-WHITE shown spring season spring wave sub-tropical zone SWELLENGREBEL temperate zone temperature Text-figures tropical zone Type I epidemic type of malaria wave of B.T. wave of malaria wave of relapses whilst Wormerveer zone malaria zone of malaria