The common cold is probably the most common illness experienced by parents and children, according to MedlinePlus, a website of the National Institutes of Health. Children catch common colds between three and five times a year, often infecting their parents during the contagious phase of the illness. The Merck Manuals Online Medical Library mentions that one group of viruses, the rhinoviruses, cause approximately one-half of all colds. Some different viruses for the common cold are the respiratory syncytial virus, metapneumoviruses,...
The human papilloma virus, or HPV, is one of the most common virus groups. According to the Oral Cancer Foundation, it contains more than 100 related viruses. Approximately 30 types are passed from person to person through sexu...
About 40 of these viruses are responsible for genital warts in both men and women, according to the Centers for Disease Control. HPV infection is the most common sexually transmitted infection, with about 20 million people in t...
There are over one hundred different types or strains of the human papillomavirus or HPV. These viruses can cause the growth of warts or lesions in the tissues they infect. The types differ in the tissues they infect and the ty...
Viruses are small organisms that invade human cells to survive and can be present in different areas of the body. Viruses present in the eye can cause infections that can occur in any part of the eye including the conjunctiva, ...
Foreign invaders such as bacterial, viral, parasitic and fungal agents cause a variety of common illnesses and diseases. Some are treatable with antibiotics or other medical interventions, while other diseases are chronic and l...
The human papillomavirus, or HPV, is one of the most common families of viruses, and it also causes the most prevalent sexually transmitted infection. It is transmitted by skin-to-skin contact. HPV is comprised of over 100 i...
When the mission is successful, the virus moves on to the next cell. Viruses are capable of causing serious infectious diseases in humans, plants and animals, and traditional antimicrobial treatments have no affect on them. So...
Parasites are organisms that live off a host organism. Worms that affect humans are types of parasites that usually live in the intestines. Worms that affect humans include pinworms, hookworms, tapeworms and roundworms. A worm ...
All humans contract multiple viruses throughout the course of life. The severity of viral illnesses ranges from mild to lethal. Cold, flu, stomach and hepatitis viruses are among the most common types of human viruses encounter...
Influenza is an airborne infection of the respiratory system that is found on every continent and can infect individuals of every age group. Its most common symptoms are fever, headache, cough, infection of the sinuses and gene...
Bacteria exist in some of the most inhospitable environments imaginable to humans. Oxygen does not get used by anaerobic bacteria. Aerobic bacteria use oxygen as the final electron acceptor to complete this process. In the case...
According to the National Institute of Allergy and Infectious Diseases (NIAID), there are over 30 million people worldwide living with HIV/AIDS, and about one million of them live in the U.S.
The destruction of the immune syst...
Viruses are parasites. They need your body so they can reproduce. A virus will go inside of your cell, enter the nucleus of that cell, and place its DNA with yours. It will then be ready to take over, reproduce and release more...
Hundreds of viruses infect humans. Some infections are so mild they usually go unrecognized. Other viruses can rapidly cause death. You will contract many viruses throughout your lifetime--and chances are you have already contr...
Some diseases are passed from one person to the next through infections such as influenza. Others develop because of environmental problems such as smoking or through cellular mutation. The medical community works to understand...
Coronary heart disease, cerebrovascular disease, chronic obstructive pulmonary disease (COPD), cancer and HIV/AIDS are common diseases in humans that rank amongst the top ten causes of death worldwide, based upon estimates prov...
Viruses have no cure. There are vaccines that can be taken to help bolster the immune system against viral infection. Not all viruses have a vaccine, and some are short-lived and so mild that an immunization is not necessary.
Viruses are infectious agents that are too small to be seen with a standard light microscope. They are obligate intracellular parasites which means they penetrate the host cells and basically program the cell to assemble new vi...
Viruses are as minor as the one that causes the common cold to as serious as HIV and hepatitis C. There are many ways in which we come in to contact with germs. Knowing ways in which you can become infected can help prepare you...
Viruses are in a class of their own, not quite alive and not quite dead. They are incapable of replicating without a host. There are numerous viruses around the world.
Viral infections are the most common cause of illness in children. They are highly contagious. Most viruses cause symptoms over a short period of time and produce mild illness. Some viruses can cause significant disease, especi...
There are three major types of influenza viruses, with two of them responsible for the seasonal flu outbreaks that occur most years. Some forms of the influenza virus normally infect non-humans but can, on occasion, infect huma...
Human papillomavirus, or HPV, is a very common family of viruses. There are more than 100 types of HPV, some of which may cause genital warts and a very few of which can cause cancer of the mouth, throat, skin, rectum and genit...
Blood-borne viruses are a broad group of infections that can be detected in a blood test. Some common viruses include hepatitis, human immunodeficiency virus (HIV) and mononucleosis. HIV and some types of hepatitis are transmi...
