The adult worms multiply by producing eggs called ova or larvae. While the protozoans are only single-celled, nematode creatures are multi cellular. Common protozoa include: Endolimax nana, Giardia lamblia, Entamoeba histolytica, Cryptosporidum parvum, Blastocystis hominis, Trichomonas vaginalis, Toxoplasma gondii, Cyclospora cayetanensis, Cryptosporidium muris, Pneumocystis carinii, Plasmodium malariae, Plasmodium ovale, Plasmodium vivax, Plasmodium falciparum, Leishmania donovani, Leishmania tropica, and Leishmania braziliensis. have some form of protozoa living inside of them. According to experts, an estimated 7 million people across the U.S. These one-celled 'vampires' can actually destroy the tissues of their hosts. In the cyst state, protozoans are safe from destruction by human digestive juices. Some protozoa produce cysts - closed sacs in which they may be safely transported through food and water from one person to another. Certain protoans, through their intensely rapid reproductive ability, can take over the intestinal tract of their host and from there go on to other organs and tissues. They are one-celled microscopic organisms, but don't let their size fool you. Making up approximately 70 percent of all invading organisms, protozoa are invisible to the naked eye. These include microscopic organisms (protozoa) roundworms, pinworms, whipworms, and hookworms (nematoda) tapeworms (cestoda) and flukes (trematoda). They are categorized according to structure, shape, function, and reproductive ability. These harmful organisms are biochemically complex creatures in their life histories, development, reproductive cycles, nutritional requirements, and manifestation. The CDC estimates that the number of parasites present in the United States alone number in the thousands. Making a parasite cleanse an essential part of an effective health maintenance program for both people and animals alike. Considering these numbers, the potential for transmission of parasitical invading organism infection from animals to humans is extremely high. Experts have projected that of the 110 million pet dogs and cats in this country, over half may be infected with at least one or more different kinds of harmful organisms. Animals are major carriers of harmful organisms, and most physicians, let alone the general public, are seemingly unaware of this fact. In fact, there is a whole set of diseases classified as 'zoonoses' (animal-transmitted diseases) in parasitology textbooks. Yet, pets, like humans, are often victims of serious infections that can unintentionally be passed on to their owners. They provide comfort, companionship, protection, amusement, and unconditional love for their owners. Forgetting to wash your hands even one time after handling or cleaning up after your animal can transmit the parasite to you. Externally, animals become infected by organisms on their bodies, especially on their fur, because of exposure to infected animal wastes. Internally, contaminated water and food can spread the problem to our pets. Most are linked to restaurants and delis where less than sanitary conditions exist - from food preparation and storage to the utensils and servers' hands.Īnimals, just like humans, can become infected with parasites and unhealthy organisms. The CDC (Center for Disease Control) cites food as the catalyst behind 80 percent of the pathogenic outbreaks in the U.S. Both plant and animal foods carry parasites, and cleaning and cooking methods often do not often destroy them before ingestion. Tap water has been found to be contaminated with harmful organisms. Since most of us eat three times a day and drink water frequently throughout the day, our exposure to these sources is constant. Tapeworms, for instance, can reach a length of 6 meters (20 feet).įood and water are the most common sources of parasite and invading organism transmission. MULTI CELLULAR ORGANISMS are so large they can usually be seen with the naked eye.SINGLE-CELL ORGANISMS tend to be at least 10 times larger than bacteria, or about.They are single-cell organisms that reproduce independently. BACTERIA vary widely in size and shape, but tend to be at least 10 times larger than viruses, or at least 1 micrometer (1 millionth of a meter) long.They have so few genes and proteins of their own that in order to reproduce they need to commandeer the machinery of the cells they invade. VIRUSES are the smallest of all infectious agents, averaging about 100 nanometers (100 billionths of a meter) in length.The approximate sizes of microbes can be approximated by using the following rule of thumb:
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