pathologist A specialist in pathology; a physician who practices, evaluates, or supervises diagnostic tests, using materials removed from living or dead patients, and functions as a laboratory consultant to clinicians, or who conducts experiments or other investigations to determine the causes or nature of disease changes.
help
Phlebotomist
Infectious diseases that are easily spread from person to person.
Diseases that are not transmitted from one person to another
Pathologist
Infectious diseases are caused by germs, such as viruses, bacteria, and parasites. Contagious or communicable diseases are those that can be spread from one person to another. Infectious diseases that commonly occur among children are often communicable or contagious and may spread very easily from person to person
A Travel Expert
A polyglot.
Such a person is a dietician, being an expert on diet and nutrition.
A slight of hand artist.
Expert gunner.
A podiatrist is an expert who deals with diseases of the feet.
Expert, Knowledgeable, etc..
Dr.Kearny was an expert in INFANTILE diseases
if you mean Cardiologist, he is an expert concerned with the heart and related diseases
There are diseases such as ich (white spots) which can be treated with salt. They can get to your pet goldfish easily and expert websites will have answers.
Phlebotomist
pullicologist