MODELLING THE IMPACT OF VACCINATION ON MALARIA DISEASE DYNAMICS IN FUZZY ENVIRONMENT

Malaria is a mosquito-borne infectious disease caused by the Plasmodium parasite. It is prevalent in many regions of the globe, particularly in sub-Saharan Africa, where it is a major cause of illness and death. Mathematical models can aid in understanding the dynamics of malaria transmission and guiding disease-control interventions. This study presents a mathematical model and focus on severely infected people of malaria transmission in both crisp and fuzzy environments. The basic reproduction number of the disease is carried out and it was found that R0islessthan1,the disease free and Endemic Equilibrium were also carried out.A parameter pertaining to the cases where relapse of the disease has occurred is considered.This work discusses the stability of the model in both crisp and fuzzy environments and also considered numerical illustrations to validate the said model.It was recommended that vaccination of susceptible human should be considered in sub-Saharan Africa on yearly basis.