Public health entomology and parasitology are more concerned with prevention (primary,secondary and tertiary) while medical entomology and parasitology are more concerned with diagnosis,treatment and pathophysiology. There are overlaps eg in describing the best biological screening methods.
Public health is more concerned with the population as a whole while the medical paradigm is more concerned with the individual, again with overlap.
Medical Entomology is a science that studies insects and athropods that affect living beings. While medical parasitology is a science that studies the parasite, their epidemiology, diagnosis, treatment and even their prevention.
Both medical/public health entomology and parasitology deal with organisms that affect human health, entomology focuses on the study of insects, while parasitology focuses on the study of parasites. However, there is often overlap between the two fields, as many parasites are transmitted by insects, such as mosquitoes and fleas.
While both fields are concerned with the transmission of diseases, parasitology focuses more on the parasites themselves and their interactions with their hosts, while medical entomology focuses more on the vectors that transmit the diseases.
Parasitology is linked with health science and medicine includes the study of parasite. It therefore adds entomology to the disciplines under study.
The main objectives of the medical entomology and parasitology departments are develop epidermalogical surveillance tools and strategies for prevention and control of vector borne diseases.
The public health deals with studying parasite and insects, the patterns of injuries,diseases, health risk factors, and clinical manifestations. The experts analyze environmental disaster and help increase public awareness.
Medical or public health entomology deals specifically with insects that are of medical importance as they cause diseases, and are responsible for transmitting diseases between humans. On the contrary, parasitology deals with parasites having economic importance because they are the causative agents of various types of diseases. However, "parasite" is a general term that includes all organisms whether an invertebrate (insects or worms), vertebrate, or any other entity that lives on, or within its host and obtains food from that very host.
Medical parasitology is the branch of medicine, more specifically biology, aimed at isolating and characterizing pathogenic parasites of humans, ie studying their epidemiology, diagnosis, treatment and prevention while medical entomology is the science that studies all insects and other arthropods that are of importance to human and animal health.