Walking is an enjoyable and healthy activity, and providing you follow a few simple rules it’s also quite safe. Although most people take extra care as they walk along narrow country lanes, many are unaware that one of the most significant health threats to walkers is Lyme disease, a bacterial infection, which spreads to humans through the bite of an infected sheep tick. Ticks are tiny bloodsucking, arachnids which live in areas of dense vegetation, such as bracken, long grass or woodlands. These minute creatures attach themselves to the skin of both animals and humans to feed on their blood.
Lyme Disease Causal Agent and Epidemiology Lyme disease is a rapidly growing vector-borne disease that spans North America (Edlow, 2012). This disease has an established and well-researched causal agent and epidemiology. Both of these aspects will be discussed in detail below. This disease has a huge impact on the population of North America, with reports of 20,000 diagnosed patients in 2011 (Elbaum-Garfinkle, 2011) and an estimated 300,000 people affected annually by 2013 (Berger et al., 2013). This disease has been recognized since 1975, and has continued to grow in incidence and impact since its initial discovery.
Lyme disease first became known in 1975 in Lyme, Connecticut when a group of mothers had informed researchers their children all had been identified in having rheumatoid arthritis. This was unusual, and led the researchers to pinpoint the bacterial cause of the children’s illness. It was then in 1982 the condition was given the name “Lyme disease”. In the United States about 300,000 people are diagnosed each year, but because many of the symptoms resemble other diseases it is hard to diagnose and many cases go undiagnosed.
Endemic Typhus, was one of the most common diseases spread in concentration camps; killing many, including Anne Frank and her sister, Margot. Usually taking place in areas with poor hygiene and cold temperatures, it is also referred to as "jail fever. " The bacteria that causes this disease is spread from rats to fleas to humans.
INTRODUCTION Trypanosomiasis is caused by a parasitic protozoan of the family Trypanosomatidae and genus Trypanosoma. Trypanosomes can infect mammals including humans and can exhibit very high parasitaemia as blood parasites; it is also considered a tissue parasite, due to its ability to invade the nervous system. It is the agent that causes sleeping sickness in humans. This disease in vertebrates is colloquially known as Surra (Derived from Marathi) or Mal de caderas in Brazil but this term was also at times used for rabies.
Bed Bugs FAQs What are bed bugs? Bed bugs (Cimex lectularius) are flat, small, parasitic insects that feed only on the blood of humans. Bed bugs are brown-reddish in color, ranging from 1mm to 7mm (roughly the size of an apple seed), wingless and can live several months without feeding on blood as a meal. Where are bed bugs found?
Toxoplasmosis is also an illness that can be contracted from pet litter. It is a parasitic disease that causes defects in the fetus. If you own a kitty and you are pregnant, don’t handle the litter box without wearing rubber gloves, and wash your hands thoroughly before touching your face or mouth. Ticks Your pet may be harboring ticks if they play out in the woods.
In 1937 Eastern Africa, in the country of Uganda, was the first time that West Nile Virus was identified. The disease then quickly spread to the United States, first reaching New York in 1999. Since then, West Nile Virus has spread throughout the world, including most of North America. Today, many cases are reported primarily in the tropics of North America, South America and Asia. (Con.
The Black Death is the name for a terrible disease that spread throughout Europe from 1347 to 1350. There was no cure for the disease and it was highly contagious. How did it start? The plague likely started in Asia and traveled westward along the Silk Road. The disease was carried by fleas that lived on rats.
General Microbiology and Immunology PM204 Rickettsia Name: Khaled Sayed Khalil ID: 141199 Lab Group: B Characteristics: 1- They are naturally obligate intracellular parasites 2- They have the common feature of being spread by arthropod vectors (lice, fleas, mites and ticks) 3- They are rod-shaped or coccoid in nature 4- They range in size from 0.3 to 0.5 micrometer
he Middle Ages The Middle Age was after the fall of the Roman Empire in the west between 500 and 1400 in Europe. During the era, the society were being terrorized and the economy were in a bad state. There was no trade going on, meaning the economy was declining and the people were terrified. The Middle Age showed a devastating era that occurred after the fall of the Roman Empire.