Food Safety
CHAPTER 1
INTRODUCTION
Why are some people getting sick while the others remain healthy? Various background of scientists exercise different methods in order to verify the causes that make people to get sick. For instance, pathologists study infinitesimal tissue samples and organisms. Physicians study the symptoms, signs and medical backgrounds of specific patients. Epidemiologists have a further distant observation as they study groups of people at the population level.
Epidemiologists in the Centers of Disease Control and Prevention, New York (CDC) work like crime scene investigators. Generally, when viewing how a disease gets spread among people, it can be seen that the disease does not have an effect on everyone in every place at the all time. On the other hands, it affects to certain people in certain places at specific times.
What is infectious disease? An individuals could get infected and being infected of disease. Infectious diseases are caused by microbes which cannot be seen in the normal eyes view. The most common infectious disease-causing microbes are bacteria, viruses, fungi and parasite. In general daily conversation, they could also being called as germs.
What are the differences between those disease-causing microbes? Bacteria are single-celled organisms which have advantages to breed themselves Through the views of microscope it is filled with fluids and move themselves like a tail. A virus is contradicted with bacteria as it is disability to breed on their own. However viruses are capable of infecting cells and take over their reproductive machinery to help them to breed. Fungi are invented of many cells yet they are not capable to produce their own food from soil and water. Examples of fungi are mushrooms and yeast. Parasites are very small and most of them are live in water. Malaria is a parasitic protozoan.
Generally, when a person is having coughs, the infection towards the people who is around him/her
INTRODUCTION
Why are some people getting sick while the others remain healthy? Various background of scientists exercise different methods in order to verify the causes that make people to get sick. For instance, pathologists study infinitesimal tissue samples and organisms. Physicians study the symptoms, signs and medical backgrounds of specific patients. Epidemiologists have a further distant observation as they study groups of people at the population level.
Epidemiologists in the Centers of Disease Control and Prevention, New York (CDC) work like crime scene investigators. Generally, when viewing how a disease gets spread among people, it can be seen that the disease does not have an effect on everyone in every place at the all time. On the other hands, it affects to certain people in certain places at specific times.
What is infectious disease? An individuals could get infected and being infected of disease. Infectious diseases are caused by microbes which cannot be seen in the normal eyes view. The most common infectious disease-causing microbes are bacteria, viruses, fungi and parasite. In general daily conversation, they could also being called as germs.
What are the differences between those disease-causing microbes? Bacteria are single-celled organisms which have advantages to breed themselves Through the views of microscope it is filled with fluids and move themselves like a tail. A virus is contradicted with bacteria as it is disability to breed on their own. However viruses are capable of infecting cells and take over their reproductive machinery to help them to breed. Fungi are invented of many cells yet they are not capable to produce their own food from soil and water. Examples of fungi are mushrooms and yeast. Parasites are very small and most of them are live in water. Malaria is a parasitic protozoan.
Generally, when a person is having coughs, the infection towards the people who is around him/her
References: Tomris A. (2003). Introduction to Toxicology and Food: New York: CRC Press. Enserink, M (2000). Malaysian researchers trace Nipah Virus outbreak to bats Journal of Science, 289,518.Retrieved August 10, 2008, from ProQuest database Loh K.Y. & Kew S.T (2006). Hepatitis B infection: what the primary care doctors should know Colin W. S., Edgar P. S., Lyn F, Anthony E. F., & Beth P. B.(2006). Hepatitis B Virus Infection: Epidemiology and Vaccination Theodore S. Y. & Mazen J. (2006) Epidemiology of Hepatitis C Virus (HCV) Infection International Journal of Medical Sciences.3 (2):41-46