James Gillett
1294527
Plasmodium Falciparum
Plasmodium Falciparum is the causative parasite of malignant malaria, it is the most deadly strain of the malaria viruses. P. Falciparum is a eukaryotic protozoan parasite that is spread through vector transmission using mosquitoes. The Anopheles mosquito family accounts for the majority of transmission because of their tendency to target humans (WHO, 2014). Malaria accounts for approximately five hundred thousand deaths each year in environments such as sub-Saharan Africa and other temperate areas where the life cycle of the mosquito is longer allowing the parasite to develop properly (WHO, 2014). Malaria usually infects children in these areas but also commonly spreads to travellers to these areas.
P.Falciparum has a complicated life cycle in which it needs to grow in both a mosquito host and a human host. While in the mosquito the parasite lives in sporozite stage and is injected into the human host through mosquito bites (Granham, 1966). The parasite then travels to the liver through the blood stream and begins to infect liver cells. By shedding their apical surface coat the sporozites recognize sugar antigens and enter into the hepatocytes (liver cells) and become trophozites, which continue to replicate inside the hepatocytes (Florens, 2002). Once this replication is completed and the parasite has matured into a merozoite it is able to leave the hepatocyte and go back into the bloodstream. These cells are now unable to infect hepatocytes and upon being released back to the bloodstream will infect erythrocytes. By hiding inside liver and blood cells the parasite is able to replicate without being attacked by the bodies immune system. P. Falciparum is able to attach to an erythr...
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Haemolytic colonies were classified by a white ring around the patched colony, indicating that haemolysis of the blood agar occurred. Conversely, non-haemolytic colonies were classified by a lack of a white ring, which indicated that no haemolysis took place.
You woke up a week ago feeling odd. You were not sure what was wrong, but your body was full of aches, you felt hot to the touch, and you kept vomiting. Your mother told you to lay down and rest, hoping it was just a cold. After a few days, you began to feel better, well enough that you wanted to return to the river to watch the trade ships come in. Now, unfortunately, your symptoms have come back with a vengeance – your fever is back along with intense abdominal pain, your mouth is bleeding without being wounded, and every time you vomit, it appears black in color. Also, when you look in the mirror, your skin has changed from the sun-kissed color you have always been to a dull yellow hue. The doctor comes in to examine you; he makes many “tsk tsk” noises and hurries out of the room with a cloth over his face. The doctor mumbles to your mother that he believes you have Yellow Jack and there is nothing more he can do, you are going to die. Your mother weeps uncontrollably yet you cannot react because another horrendous pain in your head has doubled you over. Soon, as you stop shaking and begin to relax, the sounds of the doctor and your mother become white noise and your surroundings begin to dull until you prove the doctor right; another person fell victim to the infectious Yellow Fever virus.
Ever wonder what kind of parasites are in your water, or how they can enter in to your body to make you very sick? Well it is most definite that no on want to get sick. The information found in this paper was collected over the past month, either by going to the library or by accessing information off the Internet at home, almost every night. The point that will be given to you is a little in information about the infectious disease called Schistosomiasis. The points the main points will be the causative agents, symptoms, hosts, methods of transmission and history of the disease. So lets see what Schistosomiasis is.
this is the prepatent period. The worms then reside in the heart, lungs, and associated blood vessels. The worms begin to mate and release microfilaria into the blood stream. When a mosquito bites an infected dog it takes in some of the microfilaria in the blood. After 10 to 30 days there is larvae in the mosquito’s salivary gland which can then be passed on to the next dog the mosquito bites.
The Spread of Disease In the New World The extraordinary good health of the natives prior to the coming of the Europeans would become a key ingredient in their disastrous undoing. The greatest cause of disease in America was epidemic diseases imported from Europe. Epidemic diseases killed with added virulence in the " virgin soil" populations of the Americas. The great plague that arose in the Old World never emerged on their own in the western hemisphere and did not spread across oceans until Columbus' discovery.
The reasons why Western Cambodia is a big place for drug-resistance are unknown. The falciparith parasite that lies in Cambodia is one of the four types of malaria and is the most deadly. Through a Mosquito, it enters the bloodstream and after 2 weeks of incubating, it multiplies and takes over red blood cells. Because of its ability to evolve and widespread use of the best drug used to fight it, it is becoming drug-resistant. "The population structure of the resistant parasites in the region is 'strikingly different' to other countries." "It is as if there are different ethnic groups of artemisinin-resistant parasites inhabiting in the same region." Increased efforts are needed to prevent the malaria from spreading around the world.
Transportation and migration has been important to Homo sapiens since the time of the hunter-gatherer. Humans have used the different methods of transportation since this time for a number of reasons (i.e. survival in the case of the hunter-gatherer, to spread religion, or in order to search for precious minerals and spices). What few of these human travelers failed to realize is that often diseases were migrating with them. This essay will look at the spread of the disease smallpox. In the following I hope to reveal the history of smallpox as well as why it devastated the New World.
Throughout the ages, while the origins to this day continue to be debated, the strength and potency of the disease have rarely been in question. Syphilis, while not viewed as a huge threat due to a decreased number of cases in the mid-late 1990s, needs to be taken more seriously by the public because it is more dangerous than many realize, especially because it is extremely contagious, it is extremely elegant in the symptoms it produces, it has played a larger part in history than many would think, and there is a certain stigma which surrounds the disease, which in turn pushes individuals away from receiving the necessary testing.
This disgusting worm parasite is spread by flies and mosquitoes. The adult worm spreads its larvae throughout the host’s lymphatic system and causes the lymph nodes to become clogged up. This also makes the tissue in the host’s body to swell up and create massive muscle deformations, otherwise known as elephantiasis. The elephantiasis mainly affects the legs and genitals. The disease also affects the eyes but that can be easily detected through close inspection but it commonly causes river blindness in the host. It’s been estimated that the parasite is one of the leading causes of blindness throughout the world.
Malaria kills more people than any communicable disease except for tuberculosis. It is caused by four species of parasitic protozoa that infect human red blood cells. Four different types of these protozoa are known: protozoa falciparum, protozoa vivax, protozoa ovale, and protozoa malariae. Protozoa falciparum is the most lethal of the four and accounts for the majority of infections. Malaria parasites are not able to survive unless they have both a mosquito and human host, however the disease cannot be hosted by any kind of mosquito, only those of the genus "anopheles".
Malaria is a common disease in a hot tropical area and it affects about 300 million people worldwide. There are four types of parasites that cause malaria in humans. Among the types of species Plasmodium falciparum is most common in Africa region and it can cause deadly form of disease. The Plasmodium vivax which is the second type of species is not life-threatening form of malaria. Plasmodium ovale also causes malaria. The system malaria affect most is the immune system. Malaria undergoes a complex life cycle, which involves two separate asexual reproductive stages in the vertebrate host which include humans and sexual reproduction as well as multiplication in the insect vector of all human.
Malaria is a disease that is caused by parasites. It is transferred from one person to another by the infected female Anopheles mosquito. Malaria has been a serious health problem nowadays. WHO has provided the information that approximately 660,000 people died from malaria globally during 2010. Also, after estimating, there are 219 million cases of malaria infection in 2010 worldwide. In sub-Saharan Africa, being one the country that has the high rate of HIV, AIDS, malaria, and tuberculosis, had 90% of the people that...
In likeness to Aids, the malaria virus can be in your body for up to
Malaria (also called biduoterian fever, blackwater fever, falciparum malaria, plasmodium, Quartan malaria, and tertian malaria) is one of the most infectious and most common diseases in the world. This serious, sometimes-fatal disease is caused by a parasite that is carried by a certain species of mosquito called the Anopheles. It claims more lives every year than any other transmissible disease except tuberculosis. Every year, five hundred million adults and children (around nine percent of the world’s population) contract the disease and of these, one hundred million people die. Children are more susceptible to the disease than adults, and in Africa, where ninety percent of the world’s cases occur and where eighty percent of the cases are treated at home, one in twenty children die of the disease before they reach the age of five. Pregnant women are also more vulnerable to disease and in certain parts of Africa, they are four times as likely to contract the disease and only half as likely to survive it.
Microscopy will be performed on the patient to establish the type of malaria parasite and the number of these parasites in his/her blood sample. The blood sample can be extracted through a finger stab and then made into thick and thin films, and examined severally using a 100x oil immersion objective after staining them with Romanovsky stain (Warrell, Cox, & Firth, 2005, p. 734). By observation, the species of plasmodium can be seen and the number of them established