Disease and Its Impact on Humans

When we hear the word virus, we usually think of something that makes us sick. A virus is an ultramicroscopic infectious organism that, having no independent metabolic activity, can replicate only within a cell of another host organism. A virus consists of a core of nucleic acid, either RNA or DNA, surrounded by a coating of antigenic protein and sometimes a lipid layer surrounds it as well. The viral genome provides the genetic code for replication, and the host cell provides the necessary energy and raw materials. To fight viruses, we use vaccines. While some may infect a broad range, other viruses can only infect certain kinds of cells. Vaccines are made of inactive, dead or weakened virus cells or protein antigens that can no longer infect

contaminated water or food
17. For each pathway listed in question #16, explain the relationship of the mode of transmission to the virulence of the invader.

Bloodborne pathogens are viruses that deteriorate cells within the body. A virus is a submicroscopic parasitic organism that feeds on cells. Viruses are dependent on cells for their nutrients so the virus survive and reproduce. Every virus consists of

An antigen is anything in the body the is non self which could include bacteria, viruses, chemicals or abnormal cell growth.

Exercise and physical activity deliver oxygen and nutrients to your tissues and help your cardiovascular system work more efficiently.

Indirect transmission of infectious organisms involves vehicles and vectors which carry disease agents from the source to the host.

A virus is a small capsule that contains DNA or RNA, viruses, unlike bacteria are not self sufficient and need a host in

They are harmless variant or derivative of a pathogen that stimulates a host’s immune system to mount defenses against the pathogen

An infectious disease happens when a pathogen goes in the body, multiplies, and causes illness. This is because the body is not strong enough to protect itself from an attack. Pathogens such as bacteria and viruses invade human and animals. Parasites are living organisms that live in their hosts which feed them and enable them to reproduce. Assigning codes for infectious or parasitic diseases can include combination or multiple codes. Use multiple codes when the patient has more than one diagnosis, a diagnosis with an etiology/manifestation connection, or a diagnosis and complications when there is no combination code available. Assign code V08 for a patient with asymptomatic HIV infection. Assign code 042 for a patient with an HIV-related

According to Mayo Clinic, “exercise benefits every part of your body, it helps you feel better, have more energy, and contributes to your life expectancy.” (Mayo, 2011).

Sub-Point b: Another great benefit is being able to control your weight. Physical activity plays a critical role in weight control. The CDC states that you should work your way up to at least 150 minutes of moderate exercise each week. Strong scientific evidence shows that physical activity can help maintain your weight overtime( It does vary from person to

A communicable disease chain is the mechanism by which an infective agent or pathogen is transmitted. The chain requires an infective agent, a source of infection, a mode of transmission and a host. An example of an infective agent could be bacteria, a virus, fungus, protozoan or helminth. The source of infective agents can be transmission from host to host, an infected human or animal, insects, soil or livestock. The mode of transmission is how the infective agent is carried from host to host. Transmission can be by air, ingestion or physical contact. To complete a life cycle or to replicate, the infective agent requires a host.

Diseases can also be transmitted by a mechanical or biological vector, an animal (typically an arthropod) that carries the disease from one host to another.

Exercise, or physical activity helps your body in many ways. For example, exercise helps control the weight of a human. It helps prevent people gaining unwanted weight and helps people who have unwanted weight to lose it. (mayoclinic.com) When we eat, we are taking in calories, and then when we exercise we burn off

Of the many diseases spread by insects, none are actually caused by the insects themselves but by other organisms passed on when they feed or bite. Insects are capable of spreading diseases caused by many different types of microorganisms including bacteria, viruses, protozoan and others. Mosquitoes have earned the title of "the most deadly creature on earth." This is due to the fact that they spread serious epidemic diseases such as Malaria, Yellow Fever, African Sleeping Sickness, and West Nile Virus.